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TIN(1)				Usenet newsreader			  TIN(1)

NAME
     tin, rtin - Usenet newsreader

SYNOPSIS
     tin  [[-h|-H|-V] |  [[-a]	[-dlnq|-Q]  [-ACkrTzxX]]  [[-R|-S]  -s News_dir]
     [-cuvZ] [-4|-6] [-o|-w|-N|-M address] [-D debug_level] [-F filter_file] [-G
     article_limit] [-f newsrc_file]  [-g  server[:port]]  [-L	Message-ID]  [-m
     Mail_dir] [-p port] [-t timeout] [-I index_dir] [newsgroup[,...]]]

DESCRIPTION
     tin  is  a  full-screen easy to use Usenet newsreader. It can read news lo-
     cally (e.g., /var/news) or remotely (rtin or tin -r  option)  via	an  NNTP
     (Network  News Transport Protocol, RFC 3977) or NNTPS (RFC 8143) server. It
     will automatically utilize NOV newsoverview(5) style index files if  avail-
     able locally or via the NNTP [X]OVER command (RFC 2980, RFC 3977).

     tin  has  four  separate levels of operation: Selection level, Group level,
     Thread level and Article level. Use the Help ('h') command to view  a  list
     of the commands available at a particular level.

     On  startup  tin  will  show  a list of the newsgroups found in ${TIN_HOME-
     DIR:-"$HOME"}/.newsrc. An arrow '->' or highlighted bar will point  to  the
     first newsgroup. Move to a group by using the terminal arrow keys (terminal
     dependent)  or  Down ('j') and Up ('k'). Use PgUp/PgDn (terminal dependent)
     or PageUp ('^U') (CTRL-U) and PageDown ('^D') (CTRL-D) to page up/down. En-
     ter a newsgroup by pressing '<CR>'.

     The GroupNextUnreadArtOrGrp ('<TAB>') key enters the  next  newsgroup  with
     unread articles.

EXIT STATUS
     0		 Successful program execution. No unread news available in batch
		 mode.

     1		 Usage, syntax, configuration file or network error.

     2		 Unread news available (batch mode (''-Z'') only).

     3		 NNTP error.

OPTIONS
     -4 	 Force	connecting  via  IPv4  to  the	remote NNTP server. Only
		 available when built with IPv6 support.

     -6 	 Force connecting via IPv6  to	the  remote  NNTP  server.  Only
		 available when built with IPv6 support.

     -a 	 Toggle ANSI color (default is off).

     -A 	 Force	authentication	on  initial connect. Only available when
		 reading via NNTP.  See  also  ${TIN_HOMEDIR:-"$HOME"}/.newsauth
		 in tin(5).

     -c 	 Create/update	index  files  for  every  group  in  ${TIN_HOME-
		 DIR:-"$HOME"}/.newsrc or file specified by  the  ''-f''  option
		 and mark all articles as read.

     -C 	 Use  COMPRESS	NNTP extension (RFC 8054) if available. See also
		 nntp_read_timeout_secs, ''-t'' and the  "SECURITY"  and  "BUGS"
		 section.

     -d 	 Don't	load  newsgroup  descriptions and servers message of the
		 day (interactive mode).

     -D debug-level
		 Enter debug-level, the levels can specified via number  (should
		 be  avoided  as it will be removed in the future) or name (case
		 insensitive) as listed below. Use comma to give  multiple  lev-
		 els,  any combinations are allowed (e.g., ''-D GNKSA,2,NNTP'').
		 If removal is requested it will be performed at startup and  on
		 normal  termination (that is the files are only available while
		 tin is running).
		      1   NNTP	       NNTPS
		      2   FILTER       ARTS
		      4   NEWSRC       BITMAP
		      8   THREADING    REFS
		     16   MEMORY       MALLOC
		     32   ATTRIBUTES
		     64   MISC	       GNKSA	    ACTIVE
		    127   ALL	       EVERYTHING
		    128   REMOVE       DELETE
		 For NNTP-level ''-v'' controls the  verbosity	of  the  output.
		 Depending  on	the  debug-level various files may be written to
		 $TMPDIR and/or on screen output may be given. See also the "SE-
		 CURITY" section!

     -f file	 Use the specified file of subscribed to newsgroups in place  of
		 ${TIN_HOMEDIR:-"$HOME"}/.newsrc   or	a   file  specified  via
		 ${TIN_HOMEDIR:-"$HOME"}/.tin/newsrctable.

     -F file	 Use  the  specified  filter   file   instead	of   ${TIN_HOME-
		 DIR:-"$HOME"}/.filter.

     -g server[:port]
		 Use  the  server[:port]  and  newsrc  specified  in ${TIN_HOME-
		 DIR:-"$HOME"}/.tin/newsrctable. Only available when reading via
		 NNTP. If you want to give a port with a plain IPv6 address, the
		 address must be enclosed in square brackets.

     -G article-limit
		 Limit the number of articles/group to retrieve from the server.
		 If article-limit is > 0 not more than	the  last  article-limit
		 articles/group are fetched from the server. If article-limit is
		 < 0 tin will start fetching articles from your first unread mi-
		 nus  absolute value of article-limit. Default is 0, which means
		 no limit.

     -h 	 Help listing all command-line options.

     -H 	 Brief introduction to tin that is also shown the first time  it
		 is started.

     -I dir	 Directory  in	which to store newsgroup index files. Default is
		 ${TIN_INDEX_NEWSDIR:-"${TIN_HOMEDIR:-"$HOME"}/.tin"}/.news.
		 This option has no effect if tin retrieves its index files  via
		 NNTP and cache_overview_files is turned off.

     -k 	 Skip  the  certificate  verification step for NNTPS connections
		 and proceed without checking. This option implies  ''-T''.  See
		 also the "SECURITY" section.

     -l 	 Get   number	of   articles  per  group  from  the  ${TIN_LIB-
		 DIR:-NEWSLIBDIR}"/"${TIN_ACTIVEFILE:-active} file.  If  reading
		 via  NNTP  this  is done with the LIST command (RFC 3977). This
		 might result in incorrect article counts but is usually  faster
		 than  the  default  which is to read the ${TIN_LIBDIR:-NEWSLIB-
		 DIR}"/"${TIN_ACTIVEFILE:-active} file (either directly  or  via
		 LIST)	and  then check the article count via NNTP GROUP command
		 (RFC 3977)  ''-ln''.  If  reading  via  NNTP  and  LIST  COUNTS
		 (RFC  6048)  is available that is used instead as it gives more
		 accurate article counts.

     -L 	 Show the message with the given Message-ID if	available.  Only
		 available when reading via NNTP.

     -m dir	 Mailbox    directory	 to    use.   Default	is   ${TIN_HOME-
		 DIR:-"$HOME"}/Mail.

     -M user	 Mail unread articles to specified user for later  reading.  For
		 more information read section "AUTOMATIC MAILING AND SAVING NEW
		 NEWS".

     -n 	 Only load groups from the ${TIN_LIBDIR:-NEWSLIBDIR}"/"${TIN_AC-
		 TIVEFILE:-active}  file  that	are  subscribed to in the user's
		 ${TIN_HOMEDIR:-"$HOME"}/.newsrc. This allows a noticeable speed
		 up when connecting via a slow line, but tin may not be able  to
		 detect which groups are moderated. See also ''-l''.

     -N 	 Mail  unread  articles  to yourself for later reading. For more
		 information read section  "AUTOMATIC  MAILING	AND  SAVING  NEW
		 NEWS".

     -o 	 Quick	post  all postponed articles and exit. In order for this
		 to be really quick, it should be used with ''-n'' if possible.

     -p port	 Port to use if reading via NNTP (default is 119 or 563 if NNTPS
		 is enabled, see ''-T''). This also  overrides	the  environment
		 variables  $NNTPPORT and $NNTPSPORT if set. Only available when
		 reading via NNTP.

     -q 	 Don't check for new newsgroups and  skip  loading  the  servers
		 message of the day.

     -Q 	 Quick	start.	Start tin as quickly as possible. Currently this
		 is equivalent to ''-dnq''. See also the ''-C'' and ''-G''  com-
		 mand-line options.

     -r 	 Read  news  remotely  from the default NNTP server specified in
		 the environment variable $NNTPSERVER or contained in  the  file
		 /usr/local/etc/nntpserver.

     -R 	 Read news saved by the ''-S'' option.

     -s dir	 Save/read  articles  to/in  directory.  Default  is ${TIN_HOME-
		 DIR:-"$HOME"}/News.

     -S 	 Save unread articles for later reading by  the  ''-R''  option.
		 For more information read section "AUTOMATIC MAILING AND SAVING
		 NEW NEWS".

     -t timeout  Override  the	nntp_read_timeout_secs	setting.  Default is 120
		 seconds, allowed maximum is 16383.

     -T 	 Enable NNTPS (NNTP over TLS). This also overrides the	environ-
		 ment  variable  $NNTPSPORT  if set. Only available when reading
		 via NNTP.

     -u 	 Create/update	index  files  for  every  group  in  ${TIN_HOME-
		 DIR:-"$HOME"}/.newsrc	or  file specified by the ''-f'' option.
		 This option is disabled if tin retrieves its index files via an
		 NNTP server and cache_overview_files is turned off.

     -v 	 Verbose  mode	for  ''-c'',  ''-D'',  ''-M'',	''-N'',  ''-S'',
		 ''-u'',  ''-V''  and ''-Z'' options. Can be used multiple times
		 to increase verbosity.

     -V 	 Print version information and compilation options.

     -w 	 Quick mode to post an article and then exit.  This  option  im-
		 plies	''-d''.  In order for this to be really quick, it should
		 be used with ''-n'' if possible.

     -x 	 No-posting mode. You cannot post articles if you use  this  op-
		 tion.

     -X 	 No overwrite mode. ${TIN_HOMEDIR:-"$HOME"}/.newsrc and files in
		 ${TIN_HOMEDIR:-"$HOME"}/.tin will not be overwritten but may be
		 created if they don't exist. Should be used with ''-x'' if pos-
		 sible.

     -z 	 Only  start  tin  if  there is any new/unread news. If there is
		 news tin will position cursor at first group with unread  news.
		 Useful for putting in login file.

     -Z 	 Check if there is any new/unread news and exit with appropriate
		 status.  If the ''-v'' option is specified the number of unread
		 articles in each group is printed. An exit code 0 indicates  no
		 news,	1  that an error occurred and 2 that new/unread news ex-
		 ists. Useful for writing scripts.

     tin can also dynamically change its options by the  OptionMenu  ('M')  com-
     mand.  Any  changes  are written to ${TIN_HOMEDIR:-"$HOME"}/.tin/tinrc. For
     more information see section "GLOBAL OPTIONS MENU	AND  TINRC  CONFIGURABLE
     VARIABLES" and tin(5).

     A	list  of  groups  can be specified after the other command-line options.
     This can be useful if you wish to yank in or  subscribe  to  a  hand-picked
     subset  of  the active newsgroups. See the section "NEWSGROUP LISTS & WILD-
     CARDS" for the types of pattern that tin understands.

     If you specify a single group-name, or a wildcard	that  matches  a  single
     group,  then  you will automatically enter that group. Otherwise the normal
     group selection screen will  appear,  but	with  all  the	matching  groups
     present too, as though you had yanked just those groups in.

     With  the	''-w''	flag a given group-name is used as default group to post
     to. If more than one group or a wildcard is specified only the first  group
     respectively the first group that matches is used.

     Once  you	use  SelectYankActive ('y') to yank in all active groups, or Se-
     lectToggleReadDisplay ('r') to toggle the read/unread status, then the com-
     mand-line groups will be gone. You can use  SelectSyncWithActive  ('Y')  to
     reread  the  ${TIN_LIBDIR:-NEWSLIBDIR}"/"${TIN_ACTIVEFILE:-active} file and
     get them back.

     NB: With the ''-n'' flag, if reading via NNTP it may happen that  only  un-
     subscribed  groups  in  the  ${TIN_HOMEDIR:-"$HOME"}/.newsrc  file  (or the
     newsrc-file given by the ''-f''  command-line  switch  or	via  ${TIN_HOME-
     DIR:-"$HOME"}/.tin/newsrctable) can be matched.

     Command-line  options  have  higher  priority than attributes and tinrc op-
     tions.  Thus, command-line option takes precedence over  configured  values
     with  the	single	exception  that if a port is given for the newsserver in
     ${TIN_HOMEDIR:-"$HOME"}/.tin/newsrctable it will override any port given on
     the command-line. The order of command-line options is  not  important.  If
     they  are mutual exclusive the one with the highest priority will be chosen
     and a warning may be given.

USAGE
   NEWS ADMINISTRATION
     Maintaining Netnews on large networks of machines can be a pretty time-con-
     suming job as I discovered when I was given the job of maintaining our news
     system and news users.

     A user starting tin for the first time can be automatically subscribed to a
     list of newsgroups that are deemed appropriate by the  news  administrator.
     The  subscriptions file should be created in your news lib directory (i.e.,
     ${TIN_LIBDIR:-NEWSLIBDIR}/subscriptions) and should be world  readable.  If
     you  read	news  via NNTP, then your news server must support the LIST SUB-
     SCRIPTIONS command. It is part of the NNTP List Extensions (RFC  6048)  and
     all modern servers should understand it.

   SCREEN FORMAT
     tin  has  four  separate levels of operation: Selection level, Group level,
     Thread level and Article level.

     At the Selection level the title displays (the  name  of  the  news  server
     (with  a "[T]"- or "[k]"-suffix if reading via NNTPS (insecurely)) and) the
     number of subscribed groups (containing new  unread  articles).  The  news-
     groups are displayed in the middle of the screen usually with the number of
     unread  articles  displayed  on  the same line in front, but it can be cus-
     tomized via select_format.

     ->M    1	  2  comp.security.announce  Announcements from the CERT abou
       M    2	  1  news.admin.announce     Announcements for news adminstra
	    3	 22  news.software.misc      News-related software other than
	    4  1475  news.software.nntp      The Network News Transfer Protoc
       X    5	124  news.software.readers   Discussion of software used to r

     There may also be a character prefixing the line. An explanation follows:

     u	       This group is unsubscribed. To see only	your  subscribed  groups
	       use  the  SelectToggleReadDisplay ('r') or SelectYankActive ('y')
	       toggle keys.

     M	       This is a moderated group. Any posts you make will have to be ap-
	       proved by the group administrator before it will be made  public.
	       tin  will  ask  for  confirmation  before you post to a moderated
	       group.

     N	       This is a new newsgroup which has been  created	since  you  last
	       used  tin.  New newsgroups are not subscribed to by default (How-
	       ever, see the $AUTOSUBSCRIBE / $AUTOUNSUBSCRIBE environment vari-
	       ables).	Subscribe to it in the normal way if you wish the  group
	       to  continue  to appear in your Selection Menu. Simply ignore new
	       newsgroups and they will be gone the next time you start tin. You
	       will have to yank in all the groups to find them in a later  ses-
	       sion.

     D	       This  group  no	longer exists. If you no longer wish to see this
	       group then unsubscribe from it in the normal way. This flag  will
	       only appear if you have set strip_bogus to "Mark with D on selec-
	       tion screen" in the Options Menu.

     X	       You may no longer make posts to this group. Often a group will be
	       superseded by a more appropriately named one.

     =	       This  group has been renamed and you may no longer post to it. If
	       you do, then you will receive an  error	from  your  news  server
	       telling you the correct group to post to.

     At  the Group level the title contains the name of the group, the number of
     conversation threads, the abbreviated threading  method  (thread_articles),
     the  limit  of  articles to get (if set; getart_limit), the total number of
     (unread) articles (art_marked_read or art_marked_unread), the number of hot
     articles art_marked_selected, the number of  read	hot  articles  (if  any;
     art_marked_read_selected),  the  number  of recent articles (art_marked_re-
     cent) and the number of killed articles (art_marked_killed). I.e.:

			  alt.sources (5B -50/23+ 0* 3o 0K)

     The characters after the numbers depend on configuration and  if  the  cur-
     rently show_only_unread_arts is active or not.  Some numbers could be miss-
     ing  if  the specific option is not enabled.  It might also contain an 'M',
     'X' or '=' (see above; may not work with the ''-n'' command-line switch) if
     the group is moderated, set to no posting or postings to it get redirected.

     If a thread has unread articles it  is  marked  with  art_marked_unread  in
     front  of	the  total number of articles in the thread. If there are recent
     articles within the thread it might be  marked  with  art_marked_recent  in
     front  of	the total number of articles in the thread -- this is controlled
     by the recent_time option. If a thread has hot articles  in  it  (see  also
     section "FILTERING ARTICLES") it's marked with art_marked_selected in front
     of  the  total  number  of  articles in the thread. The display can be cus-
     tomized via group_format.

		  de.admin.net-abuse.announce (11B 13+ 1* 1o 0K) M

     ->   1   +   3  108 bincancels in de.talk.sex	  Christopher Lueg <l
	  2   +       69 EMP/ECP gecancelt. xynx. BI= 10  Henning Weede <hwee
	  3   o       93 EMP gecancelt. SouthBeach/Palms  Henning Weede <hwee
	  4   *      368 <1997-11-12> Fremdcancel-FAQ	  Thomas Roessler <ro

     At the Thread level the screen usually (depends  on  the  threading  method
     used) looks like this, but can be customized via thread_format:

     ->   1	 [   7]  What is this funny tree in the thre Robert F. Simmig
	  2	 [  12]  +->				     Sephan Wagner <s
	  3	 [ 230]  | `->Tin thread-level (was: What is Bob Johnson <bob
	  4	 [  22]  `->tin threading menu		     Brian Richardson

     At the Article level the page header has the following format:

     Sun, 28 Dec 1997 21:21:01	 de.admin.news.groups	    Thread   20 of 86
     Lines 50	Re: EINSPRUCH zu RESULT:de.comm.mobil.ALL   Article  47 of 59
     Urs Janssen <urs@akk.org>	       at Arbeitskreis Kultur und Kommunikati

     article-body

     The  look	of  the Selection, Group and Thread level can be customized. See
     the section "CUSTOMIZING THE SCREEN FORMAT".

   COMMON MOVING KEYS
     This table shows the common keys used for moving around all  levels  within
     tin.
				  ANSI/vt100   Other Terminals
	    Beg. of list/article  Home	       FirstPage (^)
	    End of list/article   End	       LastPage ($)
	    Page Up		  PgUp	       PageUp (u, ^U or ^B)
	    Page Down		  PgDn	       PageDown (^D or ^F or <SPACE>)
	    Line Up		  Up arrow     Up (k or ^P)
	    Line Down		  Down arrow   Down (j or ^N)

   COMMON EDITING COMMANDS
     An emacs(1) style editing package allows the easy editing of input strings.
     A history list allows the easy reuse of previously entered strings.  In ad-
     dition  to the cursor keys, the following commands are available when edit-
     ing a string:

     ^A, ^E    move to beginning or end of line, respectively.

     ^F, ^B    non-destructive move forward or back one location, respectively.

     ^D        delete the character currently under the cursor, or send  EOF  if
	       no characters in the buffer.

     ^H, <DEL>
	       delete character left of the cursor.

     ^K        delete from cursor to end of line.

     ^P, ^N    move through history, previous and next, respectively.

     ^L, ^R    redraw the current line.

     <CR>      places line on history list if non-blank, appends newline and re-
	       turns to the caller.

     <ESC>     aborts the present editing operation.

   GLOBAL COMMANDS
     The  following  commands are available at all 4 menu levels and always have
     the same effect.

     ShellEscape '!'
	       Shell  escape.  ShellEscape  by	itself	will  launch  a   shell,
	       ShellEscape <command> will run an external <command>. This facil-
	       ity may have been disabled by the System Administrator.

     ToggleColor '&'
	       Toggle use of ANSI color.

     RedrawScr '^L'
	       Redraw the current screen.

     ScrollUp '<'
	       Scroll screen up by one line.

     ScrollDown '>'
	       Scroll screen down by one line.

     Postponed 'O' '^O'
	       Reload postponed article. If your system blocks the Postponed key
	       you  must quote it by pressing '^V' (CTRL-V) first. The postpone-
	       menu offers the following actions: PromptYes ('y') =  reload  and
	       spawn  editor;  PostponeOverride  ('Y')	=  post article (without
	       spawning editor); PostponeAll ('A') = post all postponed articles
	       (without spawning editor); PromptNo ('n') =  skip  this	article;
	       Quit  ('q') = quit postponed menu. Currently there is no 'simple'
	       way to delete a postponed article from  the  postponed-file,  you
	       have  to  use  the  following command sequence instead: reload it
	       with Postponed, enter editor with PromptYes ('y'),  quit  editor,
	       discard	posting with Quit ('^O''y''q'). See also ''-o'' command-
	       line switch.

     Help 'h'  Help screen of commands available on the current  menu.	You  can
	       use  SearchSubjF  ('/'), SearchSubjB ('?') and SearchRepeat ('\')
	       to search on this screen. Quit ('q') returns to the menu.

     ToggleHelpDisplay 'H'
	       Toggle the display of help mini menu at the bottom of the  screen
	       and   posting   etiquette  after  composing  an	article  (begin-
	       ner_level).

     DisplayPostHist 'W'
	       List articles posted by user. The date posted, the newsgroup  and
	       the subject are listed. See the section "POSTING HISTORY LISTING"
	       for more information.

     Version 'v'
	       Print tin version information.

   NEWSGROUP SELECTION COMMANDS
     4	       Select group 4.

     MarkAncientArtRead '^E'
	       Mark all articles in the current group older than a given time in
	       days or a date string formatted according to RFC 5322 as read.

     SelectResetNewsrc '^R'
	       Reset ${TIN_HOMEDIR:-"$HOME"}/.newsrc file. This will destroy all
	       records of which articles have been read, so use this carefully.

     SetRange '#'
	       Choose  a  range  of articles to be affected by the next command.
	       See the section "RANGES" for more information.

     SelectSortActive '.'
	       Sort the list of newsgroups.

     SearchRepeat '\'
	       Repeat the previous search.

     SearchSubjF '/'
	       Search for a group by name and description (if displayed).

     SearchSubjB '?'
	       Backward search through the group names and descriptions.

     SelectReadGrp '^J' '<CR>'
	       Read current group.

     SelectEnterNextUnreadGrp '<TAB>' 'n'
	       Enter next group with unread news. Will wrap around to the begin-
	       ning of the group selection list looking for unread groups.

     Catchup 'c'
	       Make current group as all read [after confirmation] and	move  to
	       the next group in the group selection list.

     CatchupNextUnread 'C'
	       Mark current group as all read [after confirmation] and enter the
	       next unread group in the group selection list.

     SelectToggleDescriptions 'd'
	       Toggle  display to show just the group name or the group name and
	       the group descriptions.

     EditFilter 'E'
	       Edit the filter file and reload it afterward.

     SelectGoto 'g'
	       Choose a new group by name. This command can be	used  to  access
	       any group, even those not currently yanked in.

     ToggleInfoLastLine 'i'
	       Toggle the display of the description of the current newsgroup in
	       the last line. This will not be available if tin was started with
	       the ''-d'' option.

     ToggleInverseVideo 'I'
	       Toggle inverse video.

     ConnectionInfo 'J'
	       Show details about current connection.

     LookupMessage 'L'
	       Look  up article by ''Message-ID:''. If none of the groups listed
	       in the ''Newsgroups:''-header of the referenced article is avail-
	       able, just the contents of  the	''Newsgroups:''-header	will  be
	       displayed  in  the  last  line.	 At this level this command only
	       works  if  reading  via	NNTP  and  the	server	supports  [X]HDR
	       (RFC 2980, RFC 3977) or XPAT (RFC 2980).

     SelectMoveGrp 'm'
	       Move the current group within the group selection list. By enter-
	       ing  '1'  the  group will become the first displayed group in the
	       list, by entering '8' the eighth group in the list etc. By enter-
	       ing '$' the group will be the last group displayed.

     OptionMenu 'M'
	       User configurable options menu (for more information see  section
	       "GLOBAL OPTIONS MENU AND TINRC CONFIGURABLE VARIABLES").

     SelectNextUnreadGrp 'N'
	       Positions  the  cursor  on the next group with unread articles in
	       it.

     Quit 'q'  Quit tin -- ask the user to confirm if confirm_choice is set  ac-
	       cordingly.

     QuitTin 'Q'
	       Quit tin -- don't ask the user to confirm.

     SelectToggleReadDisplay 'r'
	       Toggle  display of all subscribed to groups and just those groups
	       containing unread articles. Command has no effect if groups  were
	       specified on the command-line when tin was started.

     BugReport 'R'
	       Mail  a	bug report or comment to <tin-bugs@tin.org>. This is the
	       best way of getting bugs fixed and features added/changed.

     SelectSubscribe 's'
	       Subscribe to current group.

     SelectSubscribePat 'S'
	       Subscribe to groups matching user specified pattern. See the sec-
	       tion "NEWSGROUP LISTS & WILDCARDS" for the types of pattern  that
	       tin understands.

     SelectUnsubscribe 'u'
	       Unsubscribe  to	current  group. This can be used to remove bogus
	       groups.	See strip_bogus in the "GLOBAL OPTIONS	MENU  AND  TINRC
	       CONFIGURABLE VARIABLES" section.

     SelectUnsubscribePat 'U'
	       Unsubscribe  to	groups	matching user specified pattern. See the
	       section "NEWSGROUP LISTS & WILDCARDS" for the  types  of  pattern
	       that tin understands.

     Post 'w'  Post  an article to current group. If posting fails for some rea-
	       son, you'll get the chance to PostEdit ('e') the  article  again,
	       PostPostpone  ('o') it for later processing (see also ''-o'' com-
	       mand-line switch) or discard it via Quit ('q').

     SelectQuitNoWrite 'X'
	       Quit tin without saving any changes to the configuration.

     SelectYankActive 'y'
	       Yanks in all groups. Toggles the displayed groups between all the
	       groups in  the  ${TIN_LIBDIR:-NEWSLIBDIR}"/"${TIN_ACTIVEFILE:-ac-
	       tive}  file  and just those that are subscribed to in ${TIN_HOME-
	       DIR:-"$HOME"}/.newsrc.

     SelectSyncWithActive 'Y'
	       Reread the  ${TIN_LIBDIR:-NEWSLIBDIR}"/"${TIN_ACTIVEFILE:-active}
	       file to see if any new news has arrived since starting tin.

     SelectMarkGrpUnread 'z' 'Z'
	       Mark all articles in the current group as unread.

   GROUP INDEX COMMANDS
     All   searches  in  this  level  are  limited  to	unread	articles  if  in
     show_only_unread_arts mode. GroupToggleReadUnread ('r') can be  use  toggle
     the setting right before/after the search.

     4	       Select article 4.

     MenuFilterSelect '^A'
	       Auto  select article(s) using a menu. Read the section "FILTERING
	       ARTICLES" for more information.

     MarkAncientArtRead '^E'
	       Mark all articles in the current group older than a given time in
	       days or a date string formatted according to RFC 5322 as read.

     MenuFilterKill '^K'
	       Kill article(s) using a menu. Read the section  "FILTERING  ARTI-
	       CLES" for more information.

     MarkFeedRead '^X'
	       Mark  current  article,	thread, range, auto-selected (hot) arti-
	       cles, articles matching pattern or tagged  articles  as	read.  A
	       prompt asks which type should be marked.

     MarkFeedUnread '^W'
	       Mark  current  article,	thread, range, auto-selected (hot) arti-
	       cles, articles matching pattern or tagged articles as  unread.  A
	       prompt asks which type should be marked.

     SetRange '#'
	       Choose  a  range  of articles to be affected by the next command.
	       See the section "RANGES" for more information.

     LastViewed '-'
	       Re-enter the last message that was viewed.

     SearchRepeat '\'
	       Repeat the previous search.

     SearchSubjF '/'
	       Search forward for specified subject.

     SearchSubjB '?'
	       Search backward for specified subject.

     GroupSelThd '*'
	       Select current thread for later processing.

     GroupDoAutoSel '+'
	       Selects all threads in current group. It is a shortcut for  call-
	       ing GroupSelPattern with a pattern of ''*''.

     GroupToggleThdSel '.'
	       Toggle  selection of current thread. If at least one unread arti-
	       cle, (but not every unread article) in the current thread is  se-
	       lected, then all unread articles become selected.

     GroupSelThdIfUnreadSelected ';'
	       For each thread in current group, if it at least one unread arti-
	       cle  is	selected,  all	unread articles become selected. This is
	       useful for auto-selection on author where reader wants to see en-
	       tire thread.

     GroupSelPattern '='
	       Prompts for a pattern with which to match on. All  threads  whose
	       subjects  match the pattern will be marked selected. A pattern of
	       ''*'' will match all subjects. Entering just  '<CR>'  will  reuse
	       the last pattern that was entered.

     GroupReverseSel '@'
	       Reverse all selections on all articles.

     GroupUndoSel '~'
	       Undo  all selections on all articles. It clears the toggle effect
	       of GroupMarkUnselArtRead ('X') command. Thus after first doing  a
	       GroupMarkUnselArtRead,  one can then do GroupUndoSel to reset ar-
	       ticles. Thus, one  can  iteratively  whittle  down  uninteresting
	       threads.

     Pipe '|'  Pipe  current  article  / thread / auto-selected (hot) articles /
	       articles matching pattern / tagged articles into command. See the
	       section "MAILING PIPING PRINTING REPOSTING AND  SAVING  ARTICLES"
	       for more information.

     QuickFilterSelect '['
	       Auto  select  article(s)  with a single key [after confirmation].
	       The defaults used for selection are based upon the following four
	       tinrc config variables: default_filter_select_case,  default_fil-
	       ter_select_expire,  default_filter_select_global and default_fil-
	       ter_select_header.  Read the section  "GLOBAL  OPTIONS  MENU  AND
	       TINRC  CONFIGURABLE  VARIABLES"	for  a full explanation of these
	       variables and "FILTERING ARTICLES" for more information	on  fil-
	       tering.

     QuickFilterKill ']'
	       Kill  article(s)  with a single key [after confirmation]. The de-
	       faults used for killing are based upon the following  four  tinrc
	       config	 variables:    default_filter_kill_case,    default_fil-
	       ter_kill_expire,  default_filter_kill_global   and   default_fil-
	       ter_kill_header.  Read the section "GLOBAL OPTIONS MENU AND TINRC
	       CONFIGURABLE VARIABLES" for a full explanation of these variables
	       and "FILTERING ARTICLES" for more information on filtering.

     GroupReadBasenote '^J' '<CR>'
	       Read current article.

     GroupNextUnreadArtOrGrp '<TAB>'
	       View next unread article or group.

     SearchAuthF 'a'
	       Author forward search. This searches for articles with a specific
	       ''From:'' line.

     SearchAuthB 'A'
	       Author backward search. Otherwise, see SearchAuthF ('a') above.

     SearchBody 'B'
	       Search  the  body of all articles in group (can be slow). You can
	       abort the search using Quit ('q').

     Catchup 'c'
	       Mark all articles as read [after confirmation] then return to the
	       group selection list. Move cursor to next group.

     CatchupNextUnread 'C'
	       Mark all articles as read [after confirmation] and enter the next
	       group with unread news.

     GroupToggleSubjDisplay 'd'
	       Cycle the display of the author through all the possible  options
	       for the tinrc variable show_author.

     GroupCancel 'D'
	       Cancel  (delete) or supersede (overwrite) the current article. It
	       must have been posted by the same user. The cancel message can be
	       seen in the newsgroup 'control' or 'control.cancel'.

     EditFilter 'E'
	       Edit the filter file and reload it afterward.

     GroupGoto 'g'
	       Choose a new group by name. This command can be	used  to  access
	       any group, even those not currently yanked in.

     GroupToggleGetartLimit 'G'
	       Toggle article/group limit.

     ToggleInfoLastLine 'i'
	       Display the subject of the first article in the current thread in
	       the last line.

     ToggleInverseVideo 'I'
	       Toggle inverse video.

     ConnectionInfo 'J'
	       Show details about current connection.

     GroupMarkThdRead 'K'
	       Mark  article/thread  as read and move onto the next unread arti-
	       cle/thread. If a range of articles/threads is set, the range will
	       be marked as read instead of  the  current  article/thread.  When
	       tagged  articles/threads  are  present, a prompt asks how to pro-
	       ceed.

     GroupListThd 'l'
	       Open the thread under the current cursor position.

     LookupMessage 'L'
	       Look up article by ''Message-ID:''. If not reading  via	NNTP  or
	       the  server neither supports [X]HDR (RFC 2980, RFC 3977) nor XPAT
	       (RFC 2980), only the IDs in the current group are searched.

     GroupMail 'm'
	       Mail current article / thread / auto-selected  (hot)  articles  /
	       articles  matching  pattern / tagged articles to someone. See the
	       section "MAILING PIPING PRINTING REPOSTING AND  SAVING  ARTICLES"
	       for more information.

     OptionMenu 'M'
	       User  configurable options menu (for more information see section
	       "GLOBAL OPTIONS MENU AND TINRC CONFIGURABLE VARIABLES").

     GroupNextGroup 'n'
	       Go to next group.

     GroupNextUnreadArt 'N'
	       Go to the next unread article.

     Print 'o'
	       Send current article / thread / auto-selected  (hot)  articles  /
	       articles  matching  pattern / tagged articles to printer. See the
	       section "MAILING PIPING PRINTING REPOSTING AND  SAVING  ARTICLES"
	       for more information.

     GroupPrevGroup 'p'
	       Go to previous group.

     GroupPrevUnreadArt 'P'
	       Go to previous unread article.

     Quit 'q'  Return to previous level.

     QuitTin 'Q'
	       Quit tin -- don't ask the user to confirm.

     GroupToggleReadUnread 'r'
	       Toggle the display between all articles and unread articles.

     BugReport 'R'
	       Mail  a	bug report or comment to <tin-bugs@tin.org>. This is the
	       best way of getting bugs fixed and features added/changed.

     GroupSave 's'
	       Save current article / thread / auto-selected  (hot)  articles  /
	       articles  matching  pattern  /  tagged  articles. See the section
	       "MAILING PIPING PRINTING REPOSTING AND SAVING ARTICLES" for  more
	       information.

     GroupAutoSave 'S'
	       Save marked articles automatically without further prompting.

     GroupTag 't'
	       Toggle tag-status of current article / thread for GroupMail ('m')
	       / Pipe ('|') / Print ('o') / GroupSave ('s') / GroupRepost ('x').

     GroupTagParts 'T'
	       Automatically  tag/untag  all the parts of the current multi-part
	       message in order.

     GroupToggleThreading 'u'
	       Cycle the threading mode through no threading, threading by  sub-
	       ject, threading by references, threading on both subject and ref-
	       erences,  group	multipart  articles  into a thread (''Subject:''
	       based).

     GroupUntag 'U'
	       Untag all articles that were tagged.

     Post 'w'  Post an article to the current group. If posting fails  for  some
	       reason,	you'll	get  the  chance  to  edit the article again via
	       PostEdit ('e'), postpone it for later processing via PostPostpone
	       ('o') (see also ''-o'' command-line switch)  or	discard  it  via
	       Quit ('q').

     GroupRepost 'x'
	       Repost  an  already posted article / thread / auto-selected (hot)
	       articles / articles matching pattern / tagged articles to another
	       newsgroup(s). Useful for reposting from	global	to  local  news-
	       groups. Do not use this to crosspost your own articles.

     GroupMarkUnselArtRead 'X'
	       Mark all unread articles that have not been selected as read, re-
	       draw  screen to reflect changes and put index at the first thread
	       to begin reading.   Pressing  GroupMarkUnselArtRead  ('X')  again
	       will toggle back to the way it was before. See GroupUndoSel ('~')
	       command	for  clearing  the toggle effect, leaving the group will
	       also clear the toggle effect and make the changes permanent.

     MarkArtUnread 'z'
	       Mark current article as unread.

     MarkThdUnread 'Z'
	       Mark current thread as unread. If a range of threads is set,  the
	       range  will  be	marked	as unread instead of the current thread.
	       When tagged threads are present, a prompt asks how to proceed.

   THREAD LISTING COMMANDS
     4	       Select article 4 within thread.

     MenuFilterSelect '^A'
	       Auto select article(s) using a menu. Read the section  "FILTERING
	       ARTICLES" for more information.

     MenuFilterKill '^K'
	       Kill  article(s)  using a menu. Read the section "FILTERING ARTI-
	       CLES" for more information.

     MarkFeedRead '^X'
	       Mark current article, thread, range,  auto-selected  (hot)  arti-
	       cles,  articles	matching  pattern  or tagged articles as read. A
	       prompt asks which type should be marked.

     MarkFeedUnread '^W'
	       Mark current article, thread, range,  auto-selected  (hot)  arti-
	       cles,  articles	matching pattern or tagged articles as unread. A
	       prompt asks which type should be marked.

     SetRange '#'
	       Choose a range of articles to be affected by  the  next	command.
	       See the section "RANGES" for more information.

     LastViewed '-'
	       Re-enter the last message that was viewed.

     SearchRepeat '\'
	       Repeat the previous search.

     SearchSubjF '/'
	       Search forward for specified subject.

     SearchSubjB '?'
	       Search backward for specified subject.

     ThreadSelArt '*'
	       Select current thread for later processing.

     ThreadToggleArtSel '.'
	       Toggle selection of current article.

     ThreadReverseSel '@'
	       Reverse article selections.

     ThreadUndoSel '~'
	       Undo all selections on current thread.

     Pipe '|'  Pipe  current  article  / thread / auto-selected (hot) articles /
	       articles matching pattern / tagged articles into command. See the
	       section "MAILING PIPING PRINTING REPOSTING AND  SAVING  ARTICLES"
	       for more information.

     ThreadReadArt '^J' '<CR>'
	       Read current article within thread.

     ThreadReadNextArtOrThread '<TAB>'
	       View next unread article within thread.

     SearchAuthF 'a'
	       Author forward search. This searches for articles with a specific
	       ''From:'' line. The search will wrap over into the next thread if
	       nothing is found in the current one.

     SearchAuthB 'A'
	       Author backward search. Otherwise, see SearchAuthF ('a') above.

     SearchBody 'B'
	       Search  the  body of all articles in group (can be slow). You can
	       abort the search using Quit ('q').

     Catchup 'c'
	       Mark thread as read [after confirmation] and return to the  group
	       index page.  Move cursor to next thread.

     CatchupNextUnread 'C'
	       Mark  thread  as  read  [after  confirmation]  and enter the next
	       thread containing unread news.

     ThreadToggleSubjDisplay 'd'
	       Cycle the display of the author through all the possible  options
	       for the tinrc variable show_author.

     ThreadCancel 'D'
	       Cancel  (delete) or supersede (overwrite) the current article. It
	       must have been posted by the same user. The cancel message can be
	       seen in the newsgroup 'control' or 'control.cancel'.

     EditFilter 'E'
	       Edit the filter file and reload it afterward.

     ThreadFollowupQuote 'f'
	       Post a followup to the current article with a copy of the article
	       included.

     ThreadFollowup 'F'
	       Post a followup to the current article without a copy of the  ar-
	       ticle included.

     ToggleInfoLastLine 'i'
	       Display the subject of the current article in the last line.

     ToggleInverseVideo 'I'
	       Toggle inverse video.

     ConnectionInfo 'J'
	       Show details about current connection.

     ThreadMarkArtRead 'K'
	       Mark  article as read and move onto the next unread article. If a
	       range of articles is set, the range will be marked  as  read  in-
	       stead of the current article. When tagged articles are present, a
	       prompt asks how to proceed.

     LookupMessage 'L'
	       Look  up  article  by ''Message-ID:''. If not reading via NNTP or
	       the server neither supports [X]HDR (RFC 2980, RFC 3977) nor  XPAT
	       (RFC 2980), only the IDs in the current group are searched.

     ThreadMail 'm'
	       Mail  current  article  / thread / auto-selected (hot) articles /
	       articles matching pattern / tagged articles to someone.	See  the
	       section	"MAILING  PIPING PRINTING REPOSTING AND SAVING ARTICLES"
	       for more information.

     Print 'o'
	       Send current article / thread / auto-selected  (hot)  articles  /
	       articles  matching  pattern / tagged articles to printer. See the
	       section "MAILING PIPING PRINTING REPOSTING AND  SAVING  ARTICLES"
	       for more information.

     Quit 'q'  Return to previous level.

     QuitTin 'Q'
	       Quit tin -- don't ask the user to confirm.

     BugReport 'R'
	       Mail  a	bug report or comment to <tin-bugs@tin.org>. This is the
	       best way of getting bugs fixed and features added/changed.

     ThreadSave 's'
	       Save current article / thread / auto-selected  (hot)  articles  /
	       articles  matching  pattern  /  tagged  articles. See the section
	       "MAILING PIPING PRINTING REPOSTING AND SAVING ARTICLES" for  more
	       information.

     ThreadAutoSave 'S'
	       Save marked articles automatically without further prompting.

     ThreadTag 't'
	       Toggle  tag status of current article for mailing, piping, print-
	       ing, saving or reposting.

     ThreadTagParts 'T'
	       Automatically tag/untag all the parts of the  current  multi-part
	       message in order.

     ThreadUntag 'U'
	       Untag all tagged threads.

     Post 'w'  Post  an  article to the current group. If posting fails for some
	       reason, you'll get the chance  to  edit	the  article  again  via
	       PostEdit ('e'), postpone it for later processing via PostPostpone
	       ('o')  (see  also  ''-o''  command-line switch) or discard it via
	       Quit ('q').

     MarkArtUnread 'z'
	       Mark current article in thread as unread. If a range of	articles
	       is set, the range will be marked as unread instead of the current
	       article.  When  tagged articles are present, a prompt asks how to
	       proceed.

     MarkThdUnread 'Z'
	       Mark all articles in thread as unread.

   ARTICLE VIEWER COMMANDS
     0	       Read the first (base) article in this thread.

     4	       Read response 4 in this thread.

     MenuFilterSelect '^A'
	       Auto select article(s) using a menu. Read the section  "FILTERING
	       ARTICLES" for more information.

     PageReplyQuoteHeaders '^E'
	       Reply  through  mail  to the author of the current article with a
	       copy of the article with all headers included.

     PagePGPCheckArticle '^G'
	       Perform pgp(1) / gpg(1) operations on article. This  expects  in-
	       line pgp (RFC 9580) and not MIME pgp (RFC 3156).

     PageToggleRaw '^H'
	       Toggles the display mode (raw including all headers vs. cooked).

     MenuFilterKill '^K'
	       Kill  article(s)  using a menu. Read the section "FILTERING ARTI-
	       CLES" for more information.

     PageToggleTabs '^T'
	       Toggle the TAB width between 4 and 8 characters.

     PageFollowupQuoteHeaders '^W'
	       Post a followup to the current article with a copy of the article
	       with all headers included.

     PageToggleTex2iso '"'
	       Toggle TeX to ISO decoding for current article. The  default  be-
	       havior is taken from the tex2iso_conv variable in the tinrc file.

     PageToggleAllHeaders '*'
	       Toggles	the  display  of  all  headers vs. headers in news_head-
	       ers_to_display.

     PageArticleInfo '''
	       Detailed MIME information of the article.

     PageToggleRot '%'
	       Toggle ROT-13 decoding for this article.

     PageToggleInlineData '('
	       Toggle the display data sections outside of MIME, e.g.  uuencoded
	       or  yenc  data.	The  default behavior is taken from the hide_in-
	       line_data variable in the tinrc file.

     PageReveal ')'
	       The form feed character (^L) is often  used  to	hide  'spoilers'
	       that the reader may not initially wish to see when viewing an ar-
	       ticle.  Any  text  after  a form feed is not displayed. This key-
	       press acts like a reveal key and turns the hidden text  back  on.
	       Scrolling  down will also reveal the text, scrolling up will hide
	       it again.

     LastViewed '-'
	       Re-enter the last message that was viewed.

     SearchRepeat '\'
	       Repeat the previous search.

     SearchSubjF '/'
	       Forward search the text of this article.

     SearchSubjB '?'
	       Backward search the text of this article.

     PageSkipIncludedText ':'
	       Skip to the end of the next quoted text-block  in  this	article.
	       Quoted text is everything which matches quote_regex, quote_regex2
	       or quote_regex3.

     PageTopThd '<'
	       Go to the first article in the current thread.

     PageBotThd '>'
	       Go to the last article in the current thread.

     PageToggleHighlight '_'
	       Toggle word highlighting on/off.

     PageToggleVerbatim ','
	       Cycle through the various options of verbatim_handling.

     Pipe '|'  Pipe  current  article  / thread / auto-selected (hot) articles /
	       articles matching pattern / tagged articles into command. See the
	       section "MAILING PIPING PRINTING REPOSTING AND  SAVING  ARTICLES"
	       for more information.

     QuickFilterSelect '['
	       Auto  select  article(s) with a single key. The defaults used for
	       selection are set based upon  the  following  four  tinrc  config
	       variables:  default_filter_select_case, default_filter_select_ex-
	       pire,   default_filter_select_global    and    default_filter_se-
	       lect_header  Read the section "GLOBAL OPTIONS MENU AND TINRC CON-
	       FIGURABLE VARIABLES" for a full explanation  of	these  variables
	       and "FILTERING ARTICLES" for more information on filtering.

     QuickFilterKill ']'
	       Kill  article(s) with a single key. The defaults used for killing
	       are based upon the following four  tinrc  config  variables:  de-
	       fault_filter_kill_case,	default_filter_kill_expire, default_fil-
	       ter_kill_global and default_filter_kill_header.	Read the section
	       "GLOBAL OPTIONS MENU AND TINRC CONFIGURABLE VARIABLES" for a full
	       explanation of these variables and "FILTERING ARTICLES" for  more
	       information on filtering.

     PageNextThd '^J' '<CR>'
	       Go to next base article.

     PageNextUnread '<TAB>'
	       Go to next unread article. If the tinrc variable goto_next_unread
	       doesn't	contain  PageNextUnread,  then	this key will first page
	       through the current article.

     SearchAuthF 'a'
	       Author forward search.

     SearchAuthB 'A'
	       Author backward search.

     SearchBody 'B'
	       Search the body of all articles in group (can be slow).	You  can
	       abort the search using Quit ('q').

     Catchup 'c'
	       Mark  the  current thread as read [after confirmation] and return
	       to the previous menu. Move cursor to next item.

     CatchupNextUnread 'C'
	       Mark the rest of the current thread as read [after  confirmation]
	       and enter the next thread with unread articles.

     PageCancel 'D'
	       Cancel  (delete) or supersede (overwrite) the current article. It
	       must have been posted by the same user. The cancel message can be
	       seen in the newsgroup 'control' or 'control.cancel'.

     PageEditArticle 'e'
	       Edit the current article. This is restricted  to  mailgroups  and
	       saved news.

     EditFilter 'E'
	       Edit the filter file and reload it afterward.

     PageFollowupQuote 'f'
	       Post a followup to the current article with a copy of the article
	       included.

     PageFollowup 'F'
	       Post  a	followup to the current article without including a copy
	       of the article.

     PageFirstPage 'g'
	       Go to the start of the article.

     PageLastPage 'G'
	       Go to the end of the article.

     ToggleInfoLastLine 'i'
	       Display the subject of the current article in the last line.

     ToggleInverseVideo 'I'
	       Toggle inverse video.

     ConnectionInfo 'J'
	       Show details about current connection.

     PageKillThd 'K'
	       Mark rest of thread as read and move onto the next unread thread.

     PageListThd 'l'
	       Show the thread menu that the current article is a part of.

     LookupMessage 'L'
	       Look up article by ''Message-ID:''. If not reading  via	NNTP  or
	       the  server neither supports [X]HDR (RFC 2980, RFC 3977) nor XPAT
	       (RFC 2980), only the IDs in the current group are searched.

     PageMail 'm'
	       Mail current article / thread / auto-selected  (hot)  articles  /
	       articles  matching  pattern / tagged articles to someone. See the
	       section "MAILING PIPING PRINTING REPOSTING AND  SAVING  ARTICLES"
	       for more information.

     OptionMenu 'M'
	       User  configurable options menu (for more information see section
	       "GLOBAL OPTIONS MENU AND TINRC CONFIGURABLE VARIABLES").

     PageNextArt 'n'
	       Go to the next article.

     PageNextUnreadArt 'N'
	       Go to the next unread article.

     Print 'o'
	       Send current article / thread / auto-selected  (hot)  articles  /
	       articles  matching  pattern / tagged articles to printer. See the
	       section "MAILING PIPING PRINTING REPOSTING AND  SAVING  ARTICLES"
	       for more information.

     PagePrevArt 'p'
	       Go to the previous article.

     PagePrevUnreadArt 'P'
	       Go to the previous unread article.

     Quit 'q'  Return to the previous level.

     QuitTin 'Q'
	       Quit tin -- don't ask the user to confirm.

     PageReplyQuote 'r'
	       Reply  through  mail  to the author of the current article with a
	       copy of the article included.

     PageReply 'R'
	       Reply through mail to the author of the current	article  without
	       including the original article.

     PageSave 's'
	       Save  current  article  / thread / auto-selected (hot) articles /
	       articles matching pattern /  tagged  articles.  See  the  section
	       "MAILING  PIPING PRINTING REPOSTING AND SAVING ARTICLES" for more
	       information.

     PageAutoSave 'S'
	       Save marked articles automatically without further prompting.

     PageTag 't'
	       Toggle tag status of current article for mailing, piping,  print-
	       ing, saving or reposting.

     PageGroupSel 'T'
	       Return to group selection level.

     PageGotoParent 'u'
	       Go to parent article.

     PageViewUrl 'U'
	       Display	a  list  of URLs in the current article. See the section
	       "URL LISTING" for more information.

     PageViewAttach 'V'
	       Display a list of attachments of the  current  article.	See  the
	       section "ATTACHMENT LISTING" for more information.

     Post 'w'  Post  an  article to the current group. If posting fails for some
	       reason, you'll get the chance  to  edit	the  article  again  via
	       PostEdit ('e'), postpone it for later processing via PostPostpone
	       ('o')  (see  also  ''-o''  command-line switch) or discard it via
	       Quit ('q').

     PageRepost 'x'
	       Repost an already posted article / thread /  auto-selected  (hot)
	       articles / articles matching pattern / tagged articles to another
	       newsgroup(s).  Useful  for  reposting  from global to local news-
	       groups. Do not use this to crosspost your own articles.

     MarkArtUnread 'z'
	       Mark article as unread.

     MarkThdUnread 'Z'
	       Mark the current thread as unread.

   URL LISTING
     PageViewUrl ('U') displays a list of URLs in the current  article.  Besides
     the common moving keys, the following commands are available:

	 UrlSelect '^J' '<CR>'
		   The	current  URL  will  be	prompted  and  opened  using the
		   url_handler. '<ESC>' or no input will skip the URL.

	 SearchSubjF '/'
		   URL forward search.

	 SearchSubjB '?'
		   URL backward search.

	 SearchRepeat '\'
		   Repeat the previous search.

	 ShellEscape '!'
		   Shell escape.

	 ToggleInfoLastLine 'i'
		   Toggle the display of the current URL in the last line.

	 Help 'h'  Help screen of commands available.

	 ToggleHelpDisplay 'H'
		   Toggle the display of help mini menu at  the  bottom  of  the
		   screen  and posting etiquette after composing an article (be-
		   ginner_level).

   ATTACHMENT LISTING
     PageViewAttach ('V') displays a list of attachments of the current article.
     Besides the common moving keys, the following commands are available:

	 AttachPipe 'p'
		   Pipe attachment into command.

	 AttachSave 's'
		   Save current attachment / tagged attachments to disk.

	 AttachSelect '^J' '<CR>'
		   View attachment.

	 AttachTag 't'
		   Tag one or more attachments for saving.

	 AttachTagPattern '='
		   Prompts  for  a  pattern  to  match.  All  attachments  whose
		   name/description  or content type/transfer encoding match the
		   pattern will be tagged.

	 AttachToggleTagged '@'
		   Reverse tagging of all attachments.

	 AttachUntag 'U'
		   Untag all tagged attachments.

	 SearchSubjF '/'
		   Attachment forward search.

	 SearchSubjB '?'
		   Attachment backward search.

	 SearchRepeat '\'
		   Repeat the previous search.

	 GlobalPipe '|'
		   Pipe attachment into command. Uses the raw attachment, no de-
		   coding is done.

	 ShellEscape '!'
		   Shell escape.

	 ToggleInfoLastLine 'i'
		   Toggle the display of the name/description of the current at-
		   tachment in the last line.

	 Help 'h'  Help screen of commands available.

	 ToggleHelpDisplay 'H'
		   Toggle the display of help mini menu at  the  bottom  of  the
		   screen  and posting etiquette after composing an article (be-
		   ginner_level).

   POSTING HISTORY LISTING
     DisplayPostHist ('W') displays a  list  of  all  previous	posted	articles
     stored in ${TIN_HOMEDIR:-"$HOME"}/.tin/posted. The following information is
     shown:  a	time  stamp in "dd-mm-yy"-format, a single letter indicating the
     action which initiated the message, the group names (eventually  shortened,
     see  also	abbreviate_groupname)  or a mail address the message was sent to
     and the subject of the message. Besides the common moving keys, the follow-
     ing commands are available:

	 PostedArticlesSelect '^J' '<CR>'
		   The article with the current ''Message-ID:'' will  be  opened
		   if  available.   Note  that	this  requires	that  the ''Mes-
		   sage-ID:''  of  the	article  was  recorded	in   ${TIN_HOME-
		   DIR:-"$HOME"}/.tin/posted  which  may not always be the case.
		   If using NNTP and  the  internal  inews  (inews_prog  set  to
		   "--internal")   and	either	the  server  proposes  a  ''Mes-
		   sage-ID:'' during the POST (RFC 3977) command or tin is built
		   to generate ''Message-ID:'' this should be the case. With  an
		   external inews (and reading from local spool) it is not.

	 SearchSubjF '/'
		   URL forward search.

	 SearchSubjB '?'
		   URL backward search.

	 SearchRepeat '\'
		   Repeat the previous search.

	 ShellEscape '!'
		   Shell escape.

	 ToggleInfoLastLine 'i'
		   Toggle the display of the current ''Message-ID:'' in the last
		   line.

	 Help 'h'  Help screen of commands available.

	 ToggleHelpDisplay 'H'
		   Toggle  the	display  of  help mini menu at the bottom of the
		   screen and posting etiquette after composing an article  (be-
		   ginner_level).

   GLOBAL OPTIONS MENU AND TINRC CONFIGURABLE VARIABLES
     At  startup,  tin reads in the configuration files (see also tin(5)).  They
     contain a list of variables that can be  used  to	configure  the	way  tin
     works. If it exists, the global configuration file, /etc/tin/tinrc is read.
     After  that,  the	user's	own  configuration file is read from ${TIN_HOME-
     DIR:-"$HOME"}/.tin/tinrc. The global file is useful for  distributing  sys-
     tem-wide defaults to new users who have no private tinrc yet.

     The    variables	 are	user   configurable   by   editing   ${TIN_HOME-
     DIR:-"$HOME"}/.tin/tinrc directly. Most of them can  also	be  set  in  the
     GLOBAL  OPTIONS  MENU which is accessed by pressing OptionMenu ('M') at all
     levels. It allows the user to customize the behavior of  tin.  The  options
     are  saved to the file ${TIN_HOMEDIR:-"$HOME"}/.tin/tinrc when you exit tin
     so don't edit the file directly whilst tin is running.

     In the options menu use the cursor keys in the usual way  to  move  around.
     Use  ConfigSelect ('^J' or '<CR>') to 'open' the option you wish to change.
     You will need to enter a new value or use '<SPACE>' to toggle the available
     options. ConfigSelect will save the new value, '<ESC>' will  abort  without
     saving changes.

     As  with  the other menus, RedrawScr ('^L') will redraw the screen. You can
     use SearchSubjF ('/'), SearchSubjB ('?') and SearchRepeat ('\')  to  search
     for a specific option. Use Quit ('q') to exit the option menu and keep your
     changes. Use QuitTin ('Q') to exit without keeping your changes.

     The  options  menu  provides  access to the attributes menu for the current
     group by the ConfigToggleAttrib ('<TAB>') command. Pressing ConfigToggleAt-
     trib again toggles back to the options menu. For more information see  sec-
     tion "ATTRIBUTES MENU AND GROUP ATTRIBUTES".

     The  ConfigScopeMenu  ('S') command brings up the scopes menu. For more in-
     formation see section "SCOPES MENU".

     Finally, the ConfigServerrcMenu ('s') command brings up the  serverrc  menu
     where  values from ${TIN_HOMEDIR:-"$HOME"}/.tin/$NNTPSERVER/serverrc can be
     changed.  For more information see section "SERVERRC MENU".

     Here is a full list of all the  available	variables.  The  name  in  round
     brackets	is   the  name	of  the  corresponding	setting  in  ${TIN_HOME-
     DIR:-"$HOME"}/.tin/tinrc.

     Abbreviate long newsgroup names (abbreviate_groupname)
	 If ON abbreviate long newsgroup names at group selection level and  ar-
	 ticle	level (if necessary) like this: news.software.readers -> n.soft-
	 ware.readers -> n.s.readers -> n.s.r.	Default is OFF.

     Add posted articles to filter (add_posted_to_filter)
	 If ON add posted articles which start a new thread to filter for  high-
	 lighting follow-ups. Default is ON.

     Insert ''User-Agent:''-header (advertising)
	 Turn ON advertising in header (''User-Agent:''). Default is ON.

     Skip multipart/alternative parts (alternative_handling)
	 If  ON  strip	multipart/alternative messages automatically. Default is
	 ON.

     Character to show deleted articles (art_marked_deleted)
	 The character used to show that an article was deleted. Default is 'D'.

     Character to show inrange articles (art_marked_inrange)
	 The character used to show that an article is in a  range.  Default  is
	 '#'.

     Character to show returning arts (art_marked_return)
	 The character used to show that an article will return as an unread ar-
	 ticle when the group is next entered. Default is '-'.

     Character to show selected articles (art_marked_selected)
	 The  character  used  to  show  that an article/thread is auto-selected
	 (hot).  Default is '*'.

     Character to show recent articles (art_marked_recent)
	 The character used to show that an article/thread is recent (not  older
	 than X days). See also recent_time. Default is 'o'.

     Character to show unread articles (art_marked_unread)
	 The  character used to show that an article has not been read.  Default
	 is '+'.

     Character to show read articles (art_marked_read)
	 The character used to show that an article was read. Default is ' '.

     Character to show killed articles (art_marked_killed)
	 The character used to show that an article was killed. Default is  'K'.
	 kill_level must be set accordingly.

     Character to show read selected arts (art_marked_read_selected)
	 The  character used to show that an article was hot before it was read.
	 Default is ':'. kill_level must be set accordingly.

     Ask before using MIME viewer (ask_for_metamail)
	 If ON tin will ask before using a MIME viewer (metamail_prog)	to  dis-
	 play  MIME  messages. This only occurs if a MIME viewer is set. Default
	 is OFF.

     Format string for the Attachment level (attachment_format)
	 Format string tin uses for Attachment	level  representation.	See  the
	 section "CUSTOMIZING THE SCREEN FORMAT".  Default is "%t%s%e%c%d".

     Send you a cc and/or bcc automatically (auto_cc_bcc)
	 Automatically put your name in the ''Cc:'' (1) or ''Bcc:'' (2) field or
	 to both (3) fields when mailing an article. Default is 'No' (0).

     List thread using right arrow key (auto_list_thread)
	 If ON automatically list thread when entering it using right arrow key.
	 Default is ON.

     Reconnect to server automatically (auto_reconnect)
	 Default is OFF.

     Save articles in batch mode (batch_save)
	 If set ON articles/threads will be saved in batch mode when save ''-S''
	 or mail ''-M, -N'' is specified on the command line. Default is ON.

     Show mini menu & posting etiquette (beginner_level)
	 If  set ON a mini menu of the most useful commands will be displayed at
	 the bottom of the screen for each level. Also a short posting etiquette
	 will be displayed after composing an article. Default is ON.

     Cache NNTP overview files locally (cache_overview_files)
	 If ON, create local copies of NNTP overview files. This can be used  to
	 considerably  speed up accessing large groups when using a slow connec-
	 tion.	See also "INDEX FILES" and getart_limit. Default is OFF.

     Compress locally cached NNTP overview files (compress_overview_files)
	 If ON, locally cached NNTP overview  files  (cache_overview_files)  are
	 saved	in compressed form (RFC 1952). Useful to reduce local disk space
	 used. Default is OFF.

     Hash algorithm for cancel-locks (cancel_lock_algo)
	 Use this hash algorithm for cancel-locks  (RFC  8315).  Only  available
	 when  built  with  cancel-lock support. none disables the generation of
	 cancel-locks. Valid values are none, sha1, sha256 and sha512.	 Default
	 is sha1. See also ${TIN_HOMEDIR:-"$HOME"}/.cancelsecret in tin(5).

     Catchup read groups when quitting (catchup_read_groups)
	 If set ON the user is asked when quitting if all groups read during the
	 current session should be marked read. Default is OFF.

     Standard background color (col_back)
	 Standard background color

     Color of quoted text from external sources (col_extquote)
	 Color of quoted text from external sources

     Color of sender (From:) (col_from)
	 Color of sender (From:)

     Color of article header lines (col_head)
	 Color of header-lines

     Color of help text (col_help)
	 Color of help pages

     Color for inverse text (background) (col_invers_bg)
	 Color of background for inverse text

     Color for inverse text (foreground) (col_invers_fg)
	 Color of foreground for inverse text

     Color of status messages (col_message)
	 Color of status messages in last line

     Color of highlighting with _dash_ (col_markdash)
	 Color	of  words  emphasized like _this_. See also word_h_display_marks
	 and word_highlight.

     Color of highlighting with /slash/ (col_markslash)
	 Color of words emphasized like /this/.  See  also  word_h_display_marks
	 and word_highlight.

     Color of highlighting with *stars* (col_markstar)
	 Color	of  words  emphasized like *this*. See also word_h_display_marks
	 and word_highlight.

     Color of highlighting with -stroke- (col_markstroke)
	 Color of words emphasized like -this-.  See  also  word_h_display_marks
	 and word_highlight.

     Color of mini help menu (col_minihelp)
	 Color of mini help menu

     Color of actual news header fields (col_newsheaders)
	 Color of actual news header fields

     Standard foreground color (col_normal)
	 Standard foreground color

     Color of quoted lines (col_quote)
	 Color of quoted lines

     Color of twice quoted line (col_quote2)
	 Color of twice quoted lines

     Color of >=3 times quoted line (col_quote3)
	 Color of >=3 times quoted lines

     Color of response counter (col_response)
	 Color of response counter. This is the text that says "Response x of y"
	 in the article viewer.

     Color of signatures (col_signature)
	 Color of signatures

     Color of negative score (col_score_neg)
	 Color of negative score

     Color of positive score (col_score_pos)
	 Color of positive score

     Color of urls highlight (col_urls)
	 Color of urls highlight

     Color of verbatim blocks (col_verbatim)
	 Color of verbatim blocks

     Color of article subject lines (col_subject)
	 Color of article subject

     Color of text lines (col_text)
	 Color of text-lines

     Color of help/mail sign (col_title)
	 Color of help/mail sign

     Which actions require confirmation (confirm_choice)
	 Ask for manual confirmation to protect the user.

	  *  commands  Ask  for  confirmation before executing certain dangerous
	     commands (e.g., Catchup ('c')).  Commands	that  this  affects  are
	     marked  in this manual with '[after confirmation]'. Default is com-
	     mands & quit.

	  *  quit You'll be asked to confirm that you wish to exit tin when  you
	     use the Quit ('q') command.

	  *  select  Ask  for confirmation before marking all not selected (with
	     GroupMarkUnselArtRead ('X') command) articles as read.

     Format string for display of dates (date_format)
	 Format string used for date representation. A description of  the  dif-
	 ferent   format   options  can  be  found  in	strftime(3).   tin  uses
	 strftime(3) when available and supports  most	format	options  in  its
	 fallback code.  Default is "%a, %d %b %Y %H:%M:%S".

     (default_art_search)

     (default_author_search)

     (default_config_search)
	 The last article/author/config option that was searched for.

     (default_filter_days)
	 Default is 28.

     (default_filter_kill_case)
	 Default  for  quick  (1 key) kill filter case.  ON = filter case sensi-
	 tive, OFF = ignore case. Default is OFF.

     (default_filter_kill_expire)
	 Default for quick (1 key) kill  filter  expire.   ON  =  limit  to  de-
	 fault_filter_days, OFF = don't ever expire. Default is OFF.

     (default_filter_kill_global)
	 Default  for quick (1 key) kill filter global.  ON=apply to all groups,
	 OFF=apply to current group. Default is ON.

     (default_filter_kill_header)
	 Default for quick (1 key) kill filter header.

	  0  ''Subject:'' (case sensitive)

	  1  ''Subject:'' (ignore case)

	  2  ''From:'' (case sensitive)

	  3  ''From:'' (ignore case)

	  4  ''Message-ID:'' & full ''References:'' line

	  5  ''Message-ID:'' & last ''References:'' entry only

	  6  ''Message-ID:'' entry only

	  7  ''Lines:''

     (default_filter_select_case)
	 Default for quick (1 key) auto-selection filter  case.  ON=filter  case
	 sensitive, OFF=ignore case. Default is OFF.

     (default_filter_select_expire)
	 Default  for quick (1 key) auto-selection filter expire.  ON = limit to
	 default_filter_days, OFF = don't ever expire.	Default is OFF.

     (default_filter_select_global)
	 Default for quick (1 key) auto-selection filter  global.   ON=apply  to
	 all groups, OFF=apply to current group. Default is ON.

     (default_filter_select_header)
	 Default for quick (1 key) auto-selection filter header.

	  0  ''Subject:'' (case sensitive)

	  1  ''Subject:'' (ignore case)

	  2  ''From:'' (case sensitive)

	  3  ''From:'' (ignore case)

	  4  ''Message-ID:'' & full ''References:'' line

	  5  ''Message-ID:'' & last ''References:'' entry only

	  6  ''Message-ID:'' entry only

	  7  ''Lines:''

     (default_goto_group)

     (default_group_search)

     (default_mail_address)

     (default_move_group)

     (default_pattern)

     (default_pipe_command)

     (default_post_newsgroups)

     (default_post_subject)

     (default_range_group)

     (default_range_select)

     (default_range_thread)

     (default_repost_group)

     (default_save_file)

     (default_save_mode)

     (default_select_pattern)

     (default_shell_command)

     (default_subject_search)

     Don't break words when wrapping (dont_break_words)
	 Do  not break long lines inside a word. This applies to the body except
	 for verbatim blocks. See also wrap_column. Default is OFF.

     Draw -> instead of highlighted bar (draw_arrow)
	 Allows groups/articles to be selected by an arrow '->' if set ON or  by
	 a highlighted bar if set OFF. Default is OFF.

     Invocation of your editor (editor_format)
	 The  format string used to create the editor start command with parame-
	 ters.	Default  is  '%E  +%N  %F'  with  %E=Editor,  %N=Linenumber  and
	 %F=Filename  (e.g.,  /bin/vi +7 .article). See also $VISUAL and $EDITOR
	 under "ENVIRONMENT".

     Detection of external quotes (extquote_handling)
	 If ON quotes from external sources will be detected. Default is OFF.

     Regex used to show external quotes (extquote_regex)
	 A regular expression that will be applied when  reading  articles.  All
	 matching  lines  are shown in col_extquote. If extquote_regex is blank,
	 then tin uses a built-in default.

     Force redraw after certain commands (force_screen_redraw)
	 Specifies whether a screen redraw should always be done  after  certain
	 external commands. Default is OFF.

     Number of articles to get (getart_limit)
	 If  getart_limit  is  >  0  not  more	than the last getart_limit arti-
	 cles/group are fetched from the server. If getart_limit is < 0 tin will
	 start fetching articles from your first unread minus absolute value  of
	 getart_limit.	Note that setting getart_limit to anything except 0 dis-
	 ables cache_overview_files.  Default is 0, which means no limit.

     Catchup group using left key (group_catchup_on_exit)
	 If ON catchup group when leaving with the left arrow  key.  Default  is
	 ON.

     Format string for the Group level (group_format)
	 Format  string tin uses for Group level representation. See the section
	 "CUSTOMIZING THE SCREEN FORMAT". Default is "%n %m %R %L  %s  %F".

     Go to the next unread article with (goto_next_unread)
	 Which keys tin should accept to jump to the next unread article.   Pos-
	 sible is any combination of PageDown and PageNextUnread.  When PageDown
	 is  set,  tin	jumps to the next article at the end of the current one.
	 When PageNextUnread is set, tin jumps immediately to the  next  article
	 when PageNextUnread ('<TAB>') is pressed. Default is PageNextUnread.

     Display none mime data as an attachment (hide_inline_data)
	 If  set  to  'Nothing' (0) then raw data is displayed.  If set to 'Com-
	 plete UU/YENC' (1) then sections of uuencoded	or  yenc  data	will  be
	 shown	with  a  single tag line showing the size and filename (much the
	 same as a MIME attachment).  If set to 'Any UU/YENC' (2) then any  line
	 that  looks like uuencoded or yenc data will be folded into a tag line.
	 This is useful when uuencoded or yenc data is split  across  more  than
	 one  article  but  can also lead to false positives.  If set to 'Inline
	 PGP' (4) then any inline PGP data is hidden.  If set to 'Shar' (8) then
	 shar-archives are hidden, this should be used with care as it may  hide
	 other	shell snippets and any following text as well.	This setting can
	 also be toggled in the article viewer via PageToggleUue ('(').  Default
	 is 'Nothing' (0). The possible values are:
		0   Nothing
		1   Complete UU/YENC
		2   Any UU/YENC
		4   Inline PGP
		5   Complete UU/YENC & Inline PGP
		6   Any UU/YENC & Inline PGP
		8   Shar
		9   Complete UU/YENC & Shar
	       10   Any UU/YENC & Shar
	       12   Inline PGP & Shar
	       13   Compl. UU/YENC & PGP & Shar
	       15   Hide all

     Regex used to hide matching lines (hideline_regex)
	 A regular expression to hide matching lines in pager. Could be used  to
	 hide  excessive quoting, e.g. via '^>\s?>\s?>'. If left blank, no lines
	 will be hidden. This option  does  not  affect  lines	within	verbatim
	 blocks  and  is  applied  after trim_article_body and suppress_soft_hy-
	 phens.

     External inews (inews_prog)
	 Path, name and options of external inews(1).  If you  are  reading  via
	 NNTP  the default value is "--internal" (use built-in NNTP inews), else
	 it is "inews -h". The article is passed to inews_prog on STDIN  via  '<
	 article'.

     (info_in_last_line)
	 If  ON,  show	current group description or article subject in the last
	 line (not in the pager and global  menu)  --  ToggleInfoLastLine  ('i')
	 toggles  setting.  This  facility  is	useful	as the full width of the
	 screen is available to display long subjects. Default is OFF.

     Use interactive mail reader (interactive_mailer)
	 Interactive mailreader: if greater than 0 your mailreader will  be  in-
	 voked	earlier  for  reply  so  you can use more of its features (e.g.,
	 MIME, pgp, ...). 1 means include headers, 2 means don't include headers
	 (old use_mailreader_i=ON option). 0 turns off usage. This option has to
	 suit mailer_format. Default is 0.

     Use inverse video for page headers (inverse_okay)
	 If ON use inverse video for page headers and URL highlighting.  Default
	 is ON.

     Keep failed arts in ~/dead.articles (keep_dead_articles)
	 If ON keep all failed postings in ${TIN_HOMEDIR:-"$HOME"}/dead.articles
	 besides   keeping   the   last   failed    posting    in    ${TIN_HOME-
	 DIR:-"$HOME"}/dead.article. Default is ON.

     Keep expired filter rules in file (keep_expired_filters)
	 If  ON  keep  expired	filter rules in the file, but no longer evaluate
	 them.	Default is OFF.

     Filter which articles (kill_level)
	 This option controls the processing and display of  articles  that  are
	 killed.  There are 3 options:

	  0  Kill  only  unread  arts is the 'traditional' behavior of tin. Only
	     unread articles are killed once only by marking them read. As  fil-
	     tering  only  happens  on unread articles with kill_level set to 0,
	     art_marked_killed and art_marked_read_selected are only shown once.
	     When you reenter the group the mark will be gone.

	  1  Kill all arts & show with K will process all articles in the  group
	     and  therefore  there  is a processing overhead when using this op-
	     tion. Killed articles are threaded  as  normal  but  they	will  be
	     marked with art_marked_killed.

	  2  Kill all arts and never show will process all articles in the group
	     and  therefore  there  is a processing overhead when using this op-
	     tion. Killed articles simply does not get displayed at all.
     Default is 0 (Kill only unread arts).

     Use 8-bit characters in mail headers (mail_8bit_header)
	 Allows 8-bit characters unencoded in the header of  mail  message.  De-
	 fault	is OFF. Turning it ON is effective only if mail_mime_encoding is
	 also set to 8bit. Leaving it OFF is safe for most users  and  compliant
	 to Internet Mail Standard (RFC 5322 and RFC 2047).

     Mail address (mail_address)
	 User's mail address (and full name), if not username@host. This is used
	 when  creating  articles, sending mail and when pgp(1) / gpg(1) signing
	 (RFC 9580).

     MIME encoding in mail messages (mail_mime_encoding)
	 MIME encoding of the body in mail message, if necessary (8bit,  base64,
	 quoted-printable, 7bit). Default is quoted-printable.

     Quote line when mailing (mail_quote_format)
	 Format  of  quote  line  when replying (via mail) to an article (%A=Ad-
	 dress,  %D=Date,  %F=Fullname+Address,   %G=Groupname,   %M=Message-ID,
	 %N=Fullname,  %C=Firstname,  %I=Initials).  If the article has multiple
	 addresses, only the first is evaluated. Default is "In article  %M  you
	 wrote:"

     Format of the mailbox (mailbox_format)
	 Select  one of the following mailbox-formats: MBOXO (default, except on
	 SCO), MBOXRD or MMDF (default on SCO). See mbox(5)  and  RFC  4155  for
	 more  details	on  MBOXO  and MBOXRD and mmdf(5) for more details about
	 MMDF.

     Mail directory (maildir)
	 The directory where articles/threads are to be saved in mbox(5) format.
	 This feature is mainly for use with the mutt(1) mail program. It allows
	 the user to save articles/threads/groups simply by giving  '='  as  the
	 filename to save to.  Default is ${TIN_HOMEDIR:-"$HOME"}/Mail.

     Invocation of your mail command (mailer_format)
	 The  format  string  used  to create the mailer command with parameters
	 that is used for mailing articles to other people. Default is '%M  "%T"
	 < %F' (e.g., /bin/mail "iain" < ~/.article). The flexible format allows
	 other mailers with different command line parameters to be used such as
	    sendmail -oem -t < %F
	    mutt -H %F
	    claws-mail --compose "mailto:%T?subject=%S&insert=%F"
	 interactive_mailer  must  be  set adequate. The following substitutions
	 are supported:
	    %F		    filename
	    %M		    default_mailer
	    %S		    subject-field
	    %T		    to-filed
	    %U		    username
	    %%		    %

     'Mark as (un)read' ignores tags (mark_ignore_tags)
	 When this is ON, the GroupMarkThdRead ('K'),  ThreadMarkArtRead  ('K'),
	 MarkThdUnread	('Z')  at  Group level and MarkArtUnread ('z') at Thread
	 level functions mark just the current article or thread, ignoring other
	 tagged, (un)read articles. When OFF, the same function presents a  menu
	 with choices of the current thread or article, all tagged, unread arti-
	 cles, or nothing.

     Mark saved articles/threads as read (mark_saved_read)
	 If ON mark articles that are saved as read. Default is ON.

     Viewer program for MIME articles (metamail_prog)
	 Path,	name  and  options  of external metamail(1) program used to view
	 non-textual parts of articles.  To use  the  built-in	viewer,  set  to
	 --internal.  This  is	the  default  value  when metamail(1) is not in-
	 stalled. Leave it blank if you don't want any automatic viewing of non-
	 textual attachments. The PageViewAttach ('V')	command  can  always  be
	 used to manually view any attachments. See also ask_for_metamail.

     MM_CHARSET (mm_charset)
	 Charset  supported locally, which is also used for MIME header (charset
	 parameter and charset name in header encoding) in mail and  news  post-
	 ings.	If  MIME_STRICT_CHARSET  is  defined  at  compile  time, text in
	 charset other than the value of this parameter is considered  not  dis-
	 playable  and represented as '?'. Otherwise, all character sets are re-
	 garded as compatible with the display. If it's not set,  the  value  of
	 the  environment variable $MM_CHARSET is used. US-ASCII or compile-time
	 default is used in case neither of them is defined. If your system sup-
	 ports iconv(3) or ucnv_*(), this option is disabled and you should  use
	 mm_network_charset instead.

     MM_NETWORK_CHARSET (mm_network_charset)
	 Charset  used	for posting and MIME headers; replaces mm_charset.  Con-
	 version between mm_network_charset and local  charset	(determined  via
	 nl_langinfo(3))  is  done  via  iconv(3) or ucnv_*().	If none of these
	 functions are available on your system this option is disabled and  you
	 have to use mm_charset instead. mm_network_charset is limited to one of
	 the following charsets:
	    US-ASCII,	ISO-8859-{1,2,3,4,5,7,9,10,13,14,15,16},   KOI8-{R,U,RU}
	    EUC-{CN,JP,KR,TW}, ISO-2022-{CN,CN-EXT,JP,JP-1,JP-2}, Big5, UTF-8
	 Not all values might work on your system, see	iconv_open(3)  for  more
	 details.  If  it's  not  set,	the  value  of	the environment variable
	 $MM_CHARSET is used. US-ASCII or compile-time default is used	in  case
	 neither of them is defined.

     Attribute of highlighting with _dash_ (mono_markdash)
	 Character attribute of words emphasized like _this_. It depends on your
	 terminal which attributes are usable. See also word_h_display_marks and
	 word_highlight.

     Attribute of highlighting with /slash/ (mono_markslash)
	 Character attribute of words emphasized like /this/. It depends on your
	 terminal which attributes are usable. See also word_h_display_marks and
	 word_highlight.

     Attribute of highlighting with *stars* (mono_markstar)
	 Character attribute of words emphasized like *this*. It depends on your
	 terminal which attributes are usable. See also word_h_display_marks and
	 word_highlight.

     Attribute of highlighting with -stroke- (mono_markstroke)
	 Character attribute of words emphasized like -this-. It depends on your
	 terminal which attributes are usable. See also word_h_display_marks and
	 word_highlight.

     (newnews)
	 These	are internal timers used by tin to keep track of new newsgroups.
	 Do not change them unless you understand what they are for.

     Display these header fields (or *) (news_headers_to_display)
	 Which news headers you wish to see. If you want to see _all_ the  head-
	 ers, place an '*' as this value. This is the only way a wildcard can be
	 used.	 If you enter 'X-' as the value, you will see all headers begin-
	 ning with 'X-' (like X-Alan or X-Pape). You can list more than  one  by
	 delimiting with spaces. Not defining anything turns off this option.

     Do not display these header fields (news_headers_to_not_display)
	 Same  as news_headers_to_display except it denotes the opposite. An ex-
	 ample of using both options might be if you thought 'X-' headers were A
	 Good Thing(tm), but thought Alan and Pape were miscreants... well  then
	 you would do something like this: news_headers_to_display=X- news_head-
	 ers_to_not_display=X-Alan  X-Pape  Not defining anything turns off this
	 option.

     Quote line when following up (news_quote_format)
	 Format of quote line when posting/following up an article  (%A=Address,
	 %D=Date, %F=Fullname+Address, %G=Groupname, %M=Message-ID, %N=Fullname,
	 %C=Firstname, %I=Initials). If the article has multiple addresses, only
	 the first is evaluated. Default is "%F wrote:".

     NNTP read timeout in seconds (nntp_read_timeout_secs)
	 Time in seconds to wait for a response from the server. Default is 120.
	 Setting  this	to  0 means no timeout. As if you use the "-C" option in
	 conjunction with a low value for nntp_read_timeout_secs may result in a
	 timeout (and disconnect in batch mode) when connecting to large servers
	 or entering large groups, because the timer is set when the command  is
	 sent  to  the server and that needs some time to compress the large re-
	 sponse, the value should not be set too small.

     Unicode normalization form (normalization_form)
	 The normalization form tin should use to normalize Unicode input.   The
	 possible values are:

	  0  None: no normalization

	  1  NFKC:  Compatibility  Decomposition, followed by Canonical Composi-
	     tion

	  2  NFKD: Compatibility Decomposition

	  3  NFC: Canonical Decomposition, followed by Canonical Composition

	  4  NFD: Canonical Decomposition

	  5  NFKC_CF: Compatibility Decomposition, followed by Canonical  Compo-
	     sition and Case Folding
     Some  normalization  modes  are only available if they are supported by the
     library tin uses to do the normalization. NFC should be  used  if	possible
     (RFC 5198).

     Format string for the display of mime header at Article level
     (page_mime_format)
	 Format  string  tin uses for mime header at Page level. See the section
	 "CUSTOMIZING THE SCREEN FORMAT".  Default is "[-- %T%S%*n%z%*l%!c%!d%*e
	 --]".

     Format string for the display of uue header at Article level (page_uue_for-
     mat)
	 Format string tin uses for uue header at Page level.  See  the  section
	 "CUSTOMIZING THE SCREEN FORMAT".  Default is "[-- %T%S%*n%I%!d%*e --]".

     Format string for the display of yenc header at Article level
     (page_yenc_format)
	 Format  string  tin uses for yenc header at Page level. See the section
	 "CUSTOMIZING THE SCREEN FORMAT".  Default is "[-- %*N%!d%I [%F%G]%V%W%X
	 --]".

     Go to first unread article in group (pos_first_unread)
	 If ON put cursor at first unread article in group otherwise at last ar-
	 ticle. Default is ON.

     Use 8-bit characters in news headers (post_8bit_header)
	 Allows 8-bit characters unencoded in the header of a news  article,  if
	 set  this  also  disables  the generation of MIME-headers when they are
	 usually required. Default is OFF. Only enacted if post_mime_encoding is
	 also set to 8bit. In a number of local hierarchies where 8-bit  charac-
	 ters  are used, using unencoded (raw) 8-bit characters in header is ac-
	 ceptable and sometimes even recommended so that you need to  check  the
	 convention adopted in the local hierarchy of your interest to determine
	 what to do with this and post_mime_encoding.

     MIME encoding in news messages (post_mime_encoding)
	 MIME encoding of the body in news message, if necessary. (8bit, base64,
	 quoted-printable,  7bit).  Default is 8bit, which leads to no encoding.
	 base64 and quoted-printable are usually undesired on usenet.

     View post-processed files (post_process_view)
	 If ON, then tin will start an appropriate viewer program to display any
	 files that were post processed and uudecoded. The program is determined
	 using the mailcap(5) file. Default is ON.

     Post process saved articles (post_process_type)
	 This specifies whether to perform post processing  on	saved  articles.
	 Because  the  shell archive may contain commands you may not want to be
	 executed, be careful when extracting  shell  archives.   The  following
	 values are allowed:

	  0  No (default), no post processing is done.

	  1  Shell archives, unpacking of multi-part shar(1) files only.

	  2  Yes, binary attachments and data will be decoded and saved.

     Filename to be used for storing posted articles (posted_articles_file)
	 Keep posted articles in given file. If the given filename does not con-
	 tain  any  expandable	strings  it  will  be  prefixed with ${TIN_HOME-
	 DIR:-"$HOME"}/Mail/. If no filename is set then postings  will  not  be
	 saved.  See  the  section "MAILING PIPING PRINTING REPOSTING AND SAVING
	 ARTICLES" for more information about the various expansion  characters.
	 Default is 'posted'.

     Print all headers when printing (print_header)
	 If  ON,  then the full article header is sent to the printer. Otherwise
	 only the ''Subject:'' and ''From:'' fields are output. Default is OFF.

     Printer program with options (printer)
	 The printer program with options that is to be used to print  articles.
	 The  default  is  lpr(1)  for BSD machines and lp(1) for SysV machines.
	 Printing from tin may have been disabled by the System Administrator.

     Process only unread articles (process_only_unread)
	 If ON only save/print/pipe/mail unread articles  (tagged  articles  ex-
	 cepted).  Default is OFF.

     Show empty Followup-To in editor (prompt_followupto)
	 If  ON  show empty ''Followup-To:'' header when editing an article. De-
	 fault is OFF.

     Characters used as quote-marks (quote_chars)
	 The character used in quoting included text to  article  followups  and
	 mail replies. The '_' character represents a blank character and is re-
	 placed  with ' ' when read, %I is replaced by author's initials. If the
	 article has multiple addresses, only the first is evaluated. Default is
	 '>_'.

     Quoting behavior (quote_style)
	 How articles should be quoted when following up or  replying  to  them.
	 There	are  a	number	of  things  that can be done: empty lines can be
	 quoted, signatures can be quoted and quote_chars can be compressed when
	 quoting multiple times (for example,  '>  >  >'  will	be  turned  into
	 '>>>'). The default is to compress quotes, and to quote empty lines.
	 When  you  are  viewing an article in raw mode ('^H'), and follow up or
	 reply to it, the signature will be quoted even if it otherwise would be
	 not.  If show_signatures is off,  then  the  signature  will  never  be
	 quoted.

     Regex used to show quoted lines (quote_regex)
	 A  regular  expression  that will be applied when reading articles. All
	 matching lines are shown in col_quote. If quote_regex	is  blank,  then
	 tin uses a built-in default.

     Regex used to show twice quoted l. (quote_regex2)
	 A  regular  expression  that will be applied when reading articles. All
	 matching lines are shown in col_quote2. If quote_regex2 is blank,  then
	 tin uses a built-in default.

     Regex used to show >= 3 times q.l. (quote_regex3)
	 A  regular  expression  that will be applied when reading articles. All
	 matching lines are shown in col_quote3. If quote_regex3 is blank,  then
	 tin uses a built-in default.

     Article recentness time limit (recent_time)
	 If set to 0, this feature is deactivated, otherwise it means the number
	 of days. Default is 2.

     Render BiDi (render_bidi)
	 If  ON tin does the rendering of bi-directional text. If OFF tin leaves
	 the rendering of bi-directional text to the terminal. Default is OFF.

     Interval in seconds to reread active (reread_active_file_secs)
	 The news ${TIN_LIBDIR:-NEWSLIBDIR}"/"${TIN_ACTIVEFILE:-active} file  is
	 reread  at  regular  intervals to show if any new news has arrived. De-
	 fault is 1200. Setting this to 0 will disable this feature.

     Directory to save arts/threads in (savedir)
	 Directory where articles/threads  are	saved.	Default  is  ${TIN_HOME-
	 DIR:-"$HOME"}/News.

     Character to show global scopes (scope_marked_global)
	 The  character  used  to show that a scope was read from the global at-
	 tributes file. Default is '!'.

     Char to show global scope matches (scope_marked_global_match)
	 The character used to show that a scope was read from	the  global  at-
	 tributes file and the current group matches. Default is ':'.

     Character to show local scopes (scope_marked_local)
	 The character used to show that a scope was read from the local attrib-
	 utes file. Default is ' '.

     Char to show local scope matches (scope_marked_local_match)
	 The character used to show that a scope was read from the local attrib-
	 utes file and the current group matches. Default is '*'.

     Score limit (kill) (score_limit_kill)
	 If  the  score  of  an article is below or equal this value the article
	 gets marked as killed.

     Score limit (select) (score_limit_select)
	 If the score of an article is above or equal  this  value  the  article
	 gets marked as hot.

     Default score to kill articles (score_kill)
	 Score	 of  an  article  which  should  be  killed,  this  must  be  <=
	 score_limit_kill.

     Default score to select articles (score_select)
	 Score of an article which  should  be	marked	hot,  this  must  be  >=
	 score_limit_select.

     Number of lines to scroll in pager (scroll_lines)
	 The  number of lines that will be scrolled up/down in the article pager
	 when using cursor-up/down. The default is 1 (line-by-line). Set to 0 to
	 get traditional tin page-by-page scrolling. Set to -1 to  get	page-by-
	 page  scrolling where the top/bottom line is carried over onto the next
	 page.	This setting supersedes show_last_line_prev_page=ON. Set  to  -2
	 to	get	half-page    scrolling.    This    setting    supersedes
	 full_page_scroll=OFF.

     Format string for the Selection level (select_format)
	 Format string tin uses for Selection level representation. See the sec-
	 tion "CUSTOMIZING THE SCREEN FORMAT". Default is "%f %n %U  %G  %d".

     In group and thread level, show author by (show_author)
	 Which information about the author should be shown. Default is  2,  au-
	 thors full name.

	  0  None, only the ''Subject:'' line will be displayed.

	  1  Address, ''Subject:'' line & the address part of the ''From:'' line
	     are displayed.

	  2  Full  Name,  ''Subject:''	line & the authors full name part of the
	     ''From:'' line are displayed (default).

	  3  Address and Name, ''Subject:'' line & all of the ''From:'' line are
	     displayed.

     Show description of each newsgroup (show_description)
	 If ON show a short group description text after newsgroup name  at  the
	 group	selection  level. The ''-d'' command-line flag will override the
	 setting and turn descriptions off. The text  used  is	taken  from  the
	 ${TIN_LIBDIR:-NEWSLIBDIR}/newsgroups  file  and  if supported (requires
	 tin  to  be  built  with  mh-mail-handling  support)  from  ${TIN_HOME-
	 DIR:-"$HOME"}/.tin/mailgroups for mailgroups. Default is ON.

     Function for sorting articles (sort_function)
	 Function used for sorting articles. Default is 0.

	  0  Use qsort(3) for sorting.

	  1  Use  heapsort(3)  for sorting. This might be faster in large groups
	     with long threads (somewhat presorted data).

     Show help/mail sign in level titles (show_help_mail_sign)
	 Allows you to select whether tin shows a help indication,  a  new  mail
	 indication,  both,  or neither in the various level titles.  Default is
	 3.

	  0  Don't show help or mail sign.

	  1  Show only help sign.

	  2  Show only mail sign if new mail, show only the mail sign, and  only
	     if new mail has arrived.

	  3  Show  mail if new mail else help s., show mail sign if new mail has
	     arrived otherwise show help sign.

     Show only unread articles (show_only_unread_arts)
	 If ON show only new/unread articles otherwise show all  articles.   De-
	 fault is ON.

     Show only groups with unread arts (show_only_unread_groups)
	 If ON show only subscribed groups that contain unread articles. Default
	 is OFF.

     Display signatures (show_signatures)
	 If OFF don't show signatures when displaying articles. Default is ON.

     Display score (show_art_score)
	 If ON show article score in the lower left corner when displaying arti-
	 cles.	Default is OFF. See also col_score_neg and col_score_pos.

     Prepend signature with '\n-- \n' (sigdashes)
	 If ON prepend the signature with sigdashes. Default is ON.

     Create signature from path/command (sigfile)
	 The path that specifies the signature file to use when posting, follow-
	 ing  up  to  or replying to an article. If the path is a directory then
	 the signature will be randomly generated from files  that  are  in  the
	 specified  directory.	If the path starts with a ! the program the path
	 points to will be executed to generate a signature. In  order	to  pass
	 the  group  name  to the program, %G can be specified. This will be re-
	 placed by the name of the current newsgroup. --none will  suppress  any
	 signature.  Default is ${TIN_HOMEDIR:-"$HOME"}/.Sig.

     Add signature when reposting (signature_repost)
	 If ON add signature to reposted articles. Default is ON.

     Regex used to highlight /slashes/ (slashes_regex)
	 A  regular  expression  that will be applied when reading articles. All
	 matching  words  are  shown  in  col_markslash  or  mono_markslash.  If
	 slashes_regex is blank, then tin uses a built-in default.

     Sort articles by (sort_article_type)
	 This  specifies  how  articles should be sorted. Sort by ascending Date
	 (6) is the default. The following sort types are allowed:

	  0  Nothing, don't sort articles.

	  1  Subject: (descending), sort articles by ''Subject:'' field descend-
	     ing.

	  2  Subject: (ascending), sort articles by ''Subject:''  field  ascend-
	     ing.

	  3  From: (descending), sort articles by ''From:'' field descending.

	  4  From: (ascending), sort articles by ''From:'' field ascending.

	  5  Date: (descending), sort articles by ''Date:'' field descending.

	  6  Date:  (ascending), sort articles by ''Date:'' field ascending (de-
	     fault).

	  7  Score (descending), sort articles by filtering score descending.

	  8  Score (ascending), sort articles by filtering score ascending.

	  9  Lines: (descending), sort articles by ''Lines:'' field descending.

	  10 Lines: (ascending), sort articles by ''Lines:'' field ascending.

     Sort threads by (sort_threads_type)
	 This specifies how threads will be sorted. Sort by descending Score (1)
	 is the default. The following sort types are allowed:

	  0  Nothing, don't sort threads.

	  1  Score (descending), sort threads by filtering score descending (de-
	     fault).

	  2  Score (ascending), sort threads by filtering score ascending.

	  3  Last posting date (descending), sort threads by date of last  post-
	     ing descending.

	  4  Last posting date (ascending), sort threads by date of last posting
	     ascending.

     Spamtrap warning address parts (spamtrap_warning_addresses)
	 Set  this  option  to a list of comma-separated strings to be warned if
	 you are replying to an article by mail where the  e-mail  address  con-
	 tains one of these strings. The matching is case-insensitive. Example:

	 spam,delete,remove

     Regex used to highlight *stars* (stars_regex)
	 A  regular  expression  that will be applied when reading articles. All
	 matching  words  are  shown  in  col_markstar	or   mono_markstar.   If
	 stars_regex is blank, then tin uses a built-in default.

     Strip blanks of end of lines (strip_blanks)
	 Strips  the  blanks from the end of each line therefore speeding up the
	 display when reading on a slow terminal or via modem. Default is ON.

     Remove bogus groups from newsrc (strip_bogus)
	 Bogus	groups	are  groups  that  are	present  in   your   ${TIN_HOME-
	 DIR:-"$HOME"}/.newsrc	file  that  no	longer exist on the news server.
	 There are 3 options. 0 means do nothing & always keep bogus groups.   1
	 means	bogus  groups  will  be  permanently removed. 2 means that bogus
	 groups will appear on the Group Selection Menu, prefixed  with  a  'D'.
	 This  allows you to unsubscribe from them as and when you wish. Default
	 is 0 (Always Keep).

     No unsubscribed groups in newsrc (strip_newsrc)
	 If ON, then unsubscribed groups will be permanently removed  from  your
	 ${TIN_HOMEDIR:-"$HOME"}/.newsrc file. Default is OFF.

     Regex with Subject prefixes (strip_re_regex)
	 A regular expression to find Subject prefixes like "Re:" to remove.  If
	 strip_re_regex is blank, then tin(1) uses a built-in default.

     Regex with Subject suffixes (strip_was_regex)
	 A  regular  expression to find Subject suffixes like "(was:" to remove.
	 If strip_was_regex is blank, then tin(1) uses a built-in default.

     Regex used to highlight -strokes- (strokes_regex)
	 A regular expression that will be applied when  reading  articles.  All
	 matching  words  are  shown  in  col_markstroke or mono_markstroke.  If
	 strokes_regex is blank, then tin uses a built-in default.

     Wrap around threads on next unread (wrap_on_next_unread)
	 If enabled a search for the next unread article will  wrap  around  all
	 articles  to find also previous unread articles. If disabled the search
	 stops at the end of the thread list. Default is ON.

     Display "a as Umlaut-a (tex2iso_conv)
	 If ON, show "a as Umlaut-a, etc. Default is OFF. This behavior can also
	 be toggled in the article viewer via PageToggleTex2iso ('"').

     Thread articles by (thread_articles)
	 Defines which threading method to use. It's possible to set the thread-
	 ing type on a per group basis by setting the group  attribute	variable
	 thread_arts  to  0 - 4 in the file ${TIN_HOMEDIR:-"$HOME"}/.tin/attrib-
	 utes. (See also "ATTRIBUTES MENU AND GROUP ATTRIBUTES".) The default is
	 Both Subject and References.  The choices are:

	  0  None, don't thread.

	  1  Subject, thread on ''Subject:'' only.

	  2  References, thread on ''References:'' only.

	  3  Both Subject and References, thread on ''References:'' then  ''Sub-
	     ject:'' (default).

	  4  Multipart Subject, thread multipart articles on ''Subject:''.

	  5  Percentage  Match,  thread  base  upon a partial character match on
	     ''Subject:''.

     Catchup thread by using left key (thread_catchup_on_exit)
	 If ON catchup group/thread when leaving with the left	arrow  key.  De-
	 fault is ON.

     Format string for the Thread level (thread_format)
	 Format string tin uses for Thread level representation. See the section
	 "CUSTOMIZING THE SCREEN FORMAT". Default is "%n %m  [%L]  %T  %F".

     Matchingness of a thread (thread_perc)
	 How  closely  the  subjects must match for two threads to be considered
	 part of the same thread. This is a percentage and the default is 75%.

     Score of a thread (thread_score)
	 How the total score of a thread is computed. Default is 0, the  maximum
	 score in this thread.

	  0  Max, the maximum score in this thread.

	  1  Sum, the sum of all scores in this thread.

	  2  Average, the average score in this thread.

     CA certificate file (tls_ca_cert_file)
	 The  name of file containing all trusted CA certificates used for NNTPS
	 (RFC 8143) connections. If left empty the system default will be used.

     Transliteration (translit)
	 If ON append //TRANSLIT to the first argument of iconv_open(3)  to  en-
	 able transliteration. This means that when a character cannot be repre-
	 sented  in the target character set, it can be approximated through one
	 or several similarly looking characters. On systems where  this  exten-
	 sion doesn't exist, this option is disabled. Default is OFF.

     How to treat blank lines (trim_article_body)
	 Allows you to select how tin treats blank lines in article bodies.  De-
	 fault	is  0.	This option does not affect lines within verbatim blocks
	 and is applied before hideline_regex.

	  0  Don't trim article body, do nothing.

	  1  Skip leading blank lines.

	  2  Skip trailing blank lines.

	  3  Skip leading and trailing blank l., skip leading and trailing blank
	     lines.

	  4  Compact multiple between text, replace multiple blank lines between
	     text blocks with one blank line.

	  5  Compact multiple and skip leading, 4 + 1

	  6  Compact multiple and skip trailing, 4 + 2

	  7  Compact mltpl., skip lead. & trai., 4 + 3

     Suppress soft hyphens (suppress_soft_hyphens)
	 If ON remove soft hyphens in non verbatim blocks of articles when  they
	 are  displayed in a UTF-8 locale. The character SOFT HYPHEN (U+00AD) is
	 an invisible format character that merely indicates a preferred  intra-
	 word  line  break  position. However, some terminal emulators display a
	 space or a hyphen, for example, in the place of the soft  hyphen.  This
	 setting  can  be used to improve the display of those articles. Default
	 is OFF.

     Regex used to highlight _underline_ (underscores_regex)
	 A regular expression that will be applied when  reading  articles.  All
	 matching  words  are  shown in col_markdash or mono_markdash. If under-
	 scores_regex is blank, then tin uses a built-in default.

     Remove ~/.article after posting (unlink_article)
	 If ON remove ~/.article after posting. Default is ON.

     Program that opens URLs (url_handler)
	 The program that will be run when launching URLs in the article  viewer
	 using	PageViewUrl  ('U'). The actual URL will be appended.  Default is
	 tinurl_handler.pl.

     URL highlighting in message body (url_highlight)
	 Enable highlighting URLs in message body. Default is ON.

     Use ANSI color (use_color)
	 If enabled tin uses ANSI-colors. Default is OFF.

     Use scroll keys on keypad (use_keypad)
	 Default is OFF.

     Use mouse in xterm (use_mouse)
	 Allows the mouse button support in an xterm(1x) to be enabled/disabled.
	 Default is OFF.

     Use slrnface to show ''X-Face:''s (use_slrnface)
	 If enabled tin uses slrnface(1) to interpret  the  ''X-Face:''  header.
	 For this option to have any effect, tin must be running in an xterm(1x)
	 and slrnface(1) must be in your $PATH. Default is OFF.

     Use UTF-8 graphics (utf8_graphics)
	 If ON use UTF-8 characters for indicator ('->'), thread/attachment tree
	 and ellipsis ('...'). Default is OFF.

     Regex for begin of a verbatim block (verbatim_begin_regex)
	 A  regular expression that tin will use to find the begin of a verbatim
	 block.

     Regex for end of a verbatim block (verbatim_end_regex)
	 A regular expression that tin will use to find the end  of  a	verbatim
	 block.

     Detection and display of verbatim blocks (verbatim_handling)
	 Allows  you to select how tin treats verbatim blocks in article bodies.
	 Default is 1.

	  0  Don't detect verbatim blocks. Do nothing.

	  1  Detect and show verbatim blocks. Detect and show  verbatim  blocks,
	     including begin and end marks.

	  2  Detect,  hide begin and end marks. Detect and show verbatim blocks,
	     hide begin and end marks.

	  3  Don't show verbatim blocks. Detect verbatim blocks  and  hide  them
	     completely.

     Wildcard matching (wildcard)
	 Allows you to select how tin matches strings. The default is 0 and uses
	 the  wildmat(3) notation, which is how this has traditionally been han-
	 dled.	Setting this to 1 allows you to use perl(1)  compatible  regular
	 expressions  pcre(3) or pcre2(3) (see also perlre(1) and pcrepattern(3)
	 or pcre2pattern(3)).  You will probably want to update your filter file
	 if you use this regularly.  NB: Newsgroup names will always be  matched
	 using the wildmat(3) notation.

     What to display instead of mark (word_h_display_marks)
	 Should  the  leading and ending stars, slashes, strokes and dashes also
	 be displayed, even when they are highlighting marks?

	  0  no

	  1  yes, display mark

	  2  print a space instead

     Word highlighting in message body (word_highlight)
	 Enable word highlighting.  See  word_h_display_marks  for  the  options
	 available.  If  use_color  is enabled the colors specified in col_mark-
	 dash, col_markslash, col_markstar and col_markstroke are used for  word
	 highlighting  else the character attributes specified in mono_markdash,
	 mono_markslash, mono_markstar and mono_markstroke are used. Default  is
	 ON.

     Page line wrap column (wrap_column)
	 Sets  the  column  at which a displayed article body should be wrapped.
	 If this value is equal to 0, it defaults to the current  screen  width.
	 If   this   value  is	greater  than  your  current  screen  width  and
	 dont_break_words is unset the part off-screen is not  displayed.   Thus
	 setting  this	option to a large value can be used to disable wrapping.
	 If this value is negative the wrap margin is the current  screen  width
	 plus  the  given value (as long as the result is still positive, other-
	 wise it will fall back to the current	screen	width).  Default  is  0,
	 wrapping at the current screen width.

     Quote line when crossposting (xpost_quote_format)
	 Format  is the same as for news_quote_format, this is used when answer-
	 ing to a crossposting to several groups with no ''Followup-To:'' set.

   ATTRIBUTES MENU AND GROUP ATTRIBUTES
     tin allows certain attributes to be set on a per group basis. If it exists,
     the global attributes file, ${TIN_LIBDIR:-NEWSLIBDIR}/attributes  is  read.
     After that, the user's own attributes file ${TIN_HOMEDIR:-"$HOME"}/.tin/at-
     tributes  is  read.   The global attributes file is useful for distributing
     system-wide defaults to new users who have no private attributes file yet.

     Note that the scope=<grouplist> line has to be specified before the attrib-
     utes are specified for that list. All attributes are set  to  a  reasonable
     default  so  you only have to specify the attribute that you want to change
     (e.g., savedir). All toggle attributes are set by specifying ON/OFF. Other-
     wise, these function exactly the same as their global equivalents. For more
     details see tin(5).

     Attributes can also be changed from the attributes menu which  can  be  ac-
     cessed by ConfigToggleAttrib ('<TAB>') from the options menu or ScopeSelect
     ('^J'  or	'<CR>') from the scopes menu.  The attributes menu looks and be-
     haves very similar to the options menu. The title shows the current  scope.
     Attributes  set in the current scope are marked with '+' to the left of the
     attributes number.

     Besides the keys for moving around and changing values known from	the  op-
     tions  menu the attributes menu provides the following command: ConfigRese-
     tAttrib ('r') which resets an attribute to a default value.

   SCOPES MENU
     The scopes menu (accessible from  the  options  menu  with  ConfigScopeMenu
     ('S'))  shows  all  scopes  read from the global and local attributes file.
     Scopes from the global attributes file are marked with  scope_marked_global
     ('!')  to	the  left  of the scope number, scopes from the local attributes
     file are marked with scope_marked_local (' ').  When the scopes menu is ac-
     cessed from the group, thread, or article level, scopes where  the  current
     group  matches  are marked with scope_marked_global_match	(':') for scopes
     from the global attributes file and with scope_marked_local_match ('*') for
     scopes from the local attributes file.

     In addition to the common moving keys the following commands are available:
     ScopeSelect ('^J' or '<CR>') enter the  attributes  menu  for  the  current
     scope,  ScopeEditAttributesFile  ('E') edit the local attributes file, Sco-
     peAdd ('a') add a new scope, ScopeDelete ('d') delete  the  current  scope,
     ScopeMove ('m') move the current scope to a new position, ScopeRename ('r')
     rename the current scope.	Note that delete (ScopeDelete), rename (ScopeRe-
     name)  and  move  (ScopeMove) are not available for global scopes.  Toggle-
     HelpDisplay ('H') toggles the help mini menu at the bottom  of  the  screen
     and posting etiquette after composing an article (beginner_level).

   SERVERRC MENU
     The serverrc menu (accessible from the options menu with ConfigServerrcMenu
     ('s'))  can be used to change the server specific settings which are stored
     in ${TIN_HOMEDIR:-"$HOME"}/.tin/$NNTPSERVER/serverrc.  Changing  the  value
     of  cache_overview_files,	compress_overview_files  or  nntp_pipeline_limit
     will be become effective immediately  for	all  groups  visited  after  the
     change.	Changing  any  other  values,  i.e.  add_cmd_line_opts	or  dis-
     abled_nntp_cmds, do require a restart to take effect.

   FILTERING ARTICLES
     When there is a subject or an author which you are either	very  interested
     in,  or find completely uninteresting, you can easily instruct tin to auto-
     select or auto-kill articles that match rules that you specify. This can be
     anything from the name of the author to the number of lines in an article.

     When tin starts up the user's kill-file ${TIN_HOMEDIR:-"$HOME"}/.tin/filter
     or the file specified via ''-F'' is read (see also tin(5) ).  Each  time  a
     newsgroup	is entered the rules are applied and articles killed or selected
     when they meet certain criteria.

     The degree to which rules are applied depend on the kill_level  tinrc  set-
     ting.  By	default  killed  articles  will  only  be  marked  read.  Adjust
     kill_level for more aggressive processing. Articles that match an	auto-se-
     lection rule are marked with a ''*''.

     Filtering	  rules    can	  be	manually    entered   into   ${TIN_HOME-
     DIR:-"$HOME"}/.tin/filter (but don't do this whilst running  tin  else  you
     will lose your changes) or by using an on-screen menu within tin.

     The  filtering  capabilities  of  tin have been significantly enhanced over
     previous versions to include scoring and better  pattern  matching.  It  is
     recommended  that	you read the file filtering in the tin documentation di-
     rectory. This file can also be read online at
     <http://bzr.tin.org/doc/filtering>.

     Note that there are two different ways to match strings (see wildcard tinrc
     variable): via wildmats or via regular expressions.  The later is more com-
     plex but offers significantly more options. If you  intend  to  change  the
     matching  type  from one to the other, the rules in the filter file need to
     be changed manually first. For switching from wildmats to regexp there is a
     helper script w2r.pl(1) in the tools dir and online at
     <http://bzr.tin.org/tools/w2r.pl>.

     As regular expressions do provide options	which  are  not  available  with
     wildmats there is no helper script for such a switch. If you switch to reg-
     ular expressions, stay with them. They are powerful and fast.

     The  on-screen filtering menu is accessed by pressing MenuFilterKill ('^K')
     or MenuFilterSelect ('^A') at the Group and Article levels. It  allows  the
     user  to  kill  or  select an article that matches the current ''Subject:''
     line, ''From:'' line or a string entered by  the  user.  The  user  entered
     string  can  be  applied  to  the ''Subject:'', ''From:'', ''Message-ID:'',
     ''References:'', ''Xref:'' or ''Path:'' line of an article. The filter  can
     be limited to the current newsgroup or it can apply to all newsgroups. Once
     entered  the  user  can abort the command and not save the new filter, edit
     the full filter file or save filter.

   POSTING ARTICLES
     tin allows posting of articles, follow-up to already  posted  articles  and
     replying direct through mail to the author of an article.

     Use the Post ('w') command to post an article to a newsgroup.  After enter-
     ing  the post subject the default editor (i.e., vi(1)) or the editor speci-
     fied by the $VISUAL or $EDITOR environment variable will be started and the
     article can be entered. To crosspost articles simply add a  comma	and  the
     name  of the newsgroup(s) to the end of the ''Newsgroups:'' line at the be-
     ginning of the article. After saving and exiting the editor you  are  asked
     if you wish to a)bort posting the article, e)dit the article again or p)ost
     the article to the specified newsgroup(s).

     Use  the DisplayPostHist ('W') command to display a history of the articles
     you have posted. The date the article was posted, which newsgroups the  ar-
     ticle  was  posted  to and the articles subject line are displayed. See the
     section "POSTING HISTORY LISTING" for more information.

     Use the PageFollowupQuote ('f'), PageFollowup ('F')  or  PageFollowupQuote-
     Headers ('^W') command to post a follow-up article to an already posted ar-
     ticle. The PageFollowupQuote command will copy the text of the original ar-
     ticle  into  the editor. The PageFollowupQuoteHeaders command will copy the
     text and all headers of the original article into the editor.  The  editing
     procedure	is  the same as when posting an article with the Post ('w') com-
     mand.

     Use the PageReplyQuote  ('r'),  PageReply	('R')  or  PageReplyQuoteHeaders
     ('^E')  command  to  reply  direct through mail to the author of an already
     posted article. The PageReplyQuote command will copy the text of the origi-
     nal article into the editor. The PageReplyQuoteHeaders  command  will  copy
     the text and all headers of the original article into the editor. The edit-
     ing  procedure  is  the same as when posting an article with the Post ('w')
     command. After saving and exiting the editor you are asked if you	wish  to
     abort  sending  the article via PostAbort ('a'), edit the article again via
     PostEdit ('e') or send the article to the author via PostSend ('s').

   CUSTOMIZING THE ARTICLE QUOTE STRING
     When posting a followup to an article or replying direct to the  author  of
     an  article  via email the text of the article can be quoted. The beginning
     of the quoted text can contain information about the quoted article  (e.g.,
     Name  and	the  Message-ID of the article). If the article has multiple ad-
     dresses, only the first is evaluated. To allow  for  different  situations,
     certain  information from the article can be used in the quoted string. The
     following	variables  are	expanded  if  found  in  the   tinrc   variables
     mail_quote_format, news_quote_format or xpost_quote_format:
	    %A	Address (Email)
	    %D	Date (uses date_format)
	    %F	Full address (%N <%A>)
	    %G	Groupname
	    %M	Message-ID
	    %N	Fullname of author
	    %C	Firstname of author
	    %I	Initials of author
     e.g.,
	    mail_quote_format=On %D in %G you wrote:
	    news_quote_format=In %M, %F wrote:
     would expand to:
	    On Tue, 21 Sep 1993 09:45:51 in alt.sources you wrote:
	    In <abcINN123@example.org>, Joe Bar <joe@example.org> wrote:
     The quoted text section of an article is marked by a preceding quote string
     at  the  beginning  of each quoted line. The default quote string is set to
     '>_'. The default can be changed by setting the tinrc variable  quote_chars
     to  ones  own  preference.  (Note that '_' underline is used to represent a
     space).

   MAILING PIPING PRINTING REPOSTING AND SAVING ARTICLES
     The command interface to GroupMail, PageMail, PostMail or ThreadMail ('m'),
     Pipe ('|'), Print ('o'), PageRepost or  GroupRepost  ('x')  and  GroupSave,
     PageSave  or  ThreadSave  ('s' and GroupAutoSave, PageAutoSave or ThreadAu-
     toSave 'S') articles is the same for ease of use.

     Auto-saving with *AutoSave ('S') is a special case  and  operates	only  on
     marked  articles.	They will be processed without any further prompting ac-
     cording to the default save parameters defined in tinrc or by  any  attrib-
     utes set for the current group.

     Otherwise, the initial prompt will ask you to select which article, thread,
     hot  (auto-selected),  regular expression pattern, tagged articles you wish
     to mail, pipe etc.

     Tagged articles must have already been tagged with a  *Tag  ('t')	command.
     All tagged articles can be untagged by a *Untag ('U') untag command.

     If  a  regular expression pattern is selected you are asked to enter a pat-
     tern (e.g., to match all articles subject lines containing 'net  News'  you
     enter  "net  News"). Any articles that match the entered expression will be
     mailed, piped etc. See also the wildcard tinrc variable for  advanced  pat-
     tern matching options.

     Various expansion characters are recognized when entering the directory and
     file  to  save  to. Environment variables (prefixed with '$') and user home
     directories (prefixed by '~' or '~username') can be specified.  Environment
     variables can themselves contain other special characters.

     To save articles to a mailbox enter '=<mailbox name>' when  asked	for  the
     save filename. If you enter just '=' then articles will be saved to a mail-
     box with the name of the current newsgroup (eg, alt.sources).  See maildir.

     To save in savedir/<news.group.name>/<filename> format enter '+<filename>'.
     See  savedir.  Like  '+'  %G is expanded to the current news.group.name but
     without savedir prefixed. %P is expanded to the  news.group.name  with  all
     '.' replaced by '/'.

     If  saving multiple files at once the filename (if not referring to a mail-
     box) will be extended by ".num" where "num" is at least  a  3-digit  number
     counting  up  from  1.  Environment variables are allowed within a filename
     (e.g., $SOURCES/dir/filename).

     When saving articles you can specify whether the saved files should be post
     processed. A default process type can be set via post_process_type.

   AUTOMATIC MAILING AND SAVING NEW NEWS
     tin allows new/unread news articles to be mailed (''-M'' and ''-N'' option)
     or saved (''-S'' option) in batch mode for later reading. Useful when going
     on holiday and you don't want to return and find that expire has removed  a
     whole load of unread articles. Best to run via cron(8) everyday while away,
     after which you will be mailed a report of which articles were mailed/saved
     from  which newsgroups and the total number of articles mailed/saved. Arti-
     cles are saved in a private news structure  under	your  savedir  directory
     (default is ${TIN_HOMEDIR:-"$HOME"}/News).  Be careful of using this option
     if you read a lot of groups because you could overflow your file system.

     When  using  ''-S''  together with a given directory to save to (''-s'' op-
     tion), the same directory must be specified when reading  the  articles  by
     ''-R''.

     If you only want to save some of your groups use the batch_save tinrc vari-
     able.  Set to ON or OFF in tinrc to enable/disable saving of all groups and
     then use the batch_save attribute to fine tune which  groups  you	want  to
     have  saved. For example, if you want to save most of your groups, then set
     batch_save to ON in tinrc and selectively turn off the ones you don't  want
     using attributes.

     tin -M iain -c -f newsrc.mail
			 (mail	any  unread  articles in newsgroups specified in
			 file newsrc.mail to the local user iain and  mark  them
			 as read)

     tin -S -c -f newsrc.save
			 (save	any  unread  articles in newsgroups specified in
			 file newsrc.save and mark them as read)

     tin -R		 (read any articles saved by tin -S)

   RANGES
     A range is simply a group of items marked using  the  SetRange  ('#')  key.
     Certain tin commands will operate on a range if one exists rather than just
     the  current  item. A range is an expression of the form <min>-<max>, e.g.,
     10-15 will highlight items 10 through 15 on the current screen. Other  than
     absolute  numeric positions, '.' can be used in place of the current cursor
     position and '$' can be used to mean the highest number available. Entering
     '0' at the prompt undoes the previously entered range selection.  Currently
     the  only	commands  that	understand  ranges  are  GroupMarkThdRead ('K'),
     MarkArtUnread ('z') and MarkThdUnread ('Z').

   NEWSGROUP LISTS & WILDCARDS
     Several places in tin allow you to specify a list of newsgroups. These  in-
     clude  command-line  groups,  (un)subscribe  groups,  the AUTO[UN]SUBSCRIBE
     mechanism. The scope= attributes file tag and the filter  file  group=  tag
     also  use the same syntax. tin interprets this variable similarly to rn(1).
     It contains a list of patterns, separated by commas and  possibly	prefixed
     with  exclamation	points.  An  exclamation  point negates the meaning of a
     match on this pattern, and can be	used  to  cancel  certain  matches.  See
     wildmat(3) for details about the understood patterns. Some examples:

     alt.config,news.*,!news.test

     Matches alt.config and everything in the 'news' hierarchy except news.test

     See  the  explanation for the $AUTOSUBSCRIBE and $AUTOUNSUBSCRIBE variables
     for further examples.

   INTERACTIVE SEARCH
     Depending on the setting of the wildcard tinrc variable there are currently
     a few limitations for interactive searches SearchSubjF  ('/'),  SearchSubjB
     ('?'), SearchAuthF ('a'), SearchAuthB ('A'), SearchBody ('B') and SearchRe-
     peat ('\') one should be aware of.

     Wildmat  searches	automatically  enclose	the  search  string in asterisks
     ('*'), simulating substring searches. This behavior is fixed and cannot  be
     altered.

     Regex searches automatically replace spaces (' ') and/or tabs ('\t') in the
     search  string  with  the '\s' meta-character, which matches any whitespace
     character. This behavior cannot be prevented. Also regex searches are  case
     insensitive by default. To enforce case sensitivity, prefix the search pat-
     tern by one of the following: '(?^)' or '(?-i)'.

     If  Unicode  normalization is available, search patterns are normalized ac-
     cording to the normalization_form tinrc variable.

   SIGNATURES
     tin will recognize a signature in either ${TIN_HOMEDIR:-"$HOME"}/.signature
     or ${TIN_HOMEDIR:-"$HOME"}/.Sig.  If ${TIN_HOMEDIR:-"$HOME"}/.signature ex-
     ists, then the signature will be pulled into the editor for  mail	commands
     only.  A signature in ${TIN_HOMEDIR:-"$HOME"}/.signature will not be pulled
     into the editor for posting commands since inews(1) will append the  signa-
     ture itself.

     A	signature in ${TIN_HOMEDIR:-"$HOME"}/.Sig will be pulled into the editor
     for both posting and mailing commands.

     The following is an example of a .Sig file:
	    NAMES  Joe Bar <joe@example.org>
	    SNAIL  Musterweg 12, 99999 Notreal, Germany

     tin also has the capability to generate random signatures	on  a  per-news-
     group  basis  if  so desired.  The way to accomplish this is to specify the
     default signature or the group attribute sigfile as a  directory.	 If  for
     example  the  sigfile path is /usr/iain/.sigs and .sigs is a directory then
     tin will select a random signature from any file that is in  the  directory
     .sigs (note: one signature per numbered file).  A random signature can also
     consist  of a fixed part signature that can contain your name, address etc.
     followed by the random sig.  The fixed part of the random sig is read  from
     the file $HOME/.sigfixed.

   CUSTOMIZING THE SCREEN FORMAT
     The  look	of  the  Selection, Group and Thread level can be customized via
     format strings. These format strings define the content and the position of
     each element on the screen. Variables are used within the format strings as
     placeholders. If the article has multiple	addresses,  only  the  first  is
     evaluated. The following variables are available:

	%D	  date
	%F	  from, name and/or address
	%G	  newsgroup name
	%I	  initials
	%L	  line count
	%M	  message-id
	%R	  number of responses in thread
	%S	  score
	%T	  thread tree
	%U	  unread count
	%d	  newsgroup description
	%f	  newsgroup flag
	%m	  article marks
	%n	  current group/thread/article number
	%s	  subject
	%%	  %

     Not  all  variables can be used in each level. The following table provides
     an overview:

	    select_format group_format thread_format
	%D			X	     X
	%F			X	     X
	%G	  X
	%I			X	     X
	%L			X	     X
	%M			X	     X
	%R			X
	%S			X	     X
	%T				     X
	%U	  X
	%d	  X
	%f	  X
	%m			X	     X
	%n	  X		X	     X
	%s			X
	%%	  X		X	     X

     Defaults for the format strings:

	select_format: "%f %n %U  %G  %d"
	group_format:  "%n %m %R %L  %s  %F"
	thread_format: "%n %m  [%L]  %T  %F"

     show_description controls whether the newsgroup  description  is  shown  or
     not.  The	description  can  also	be toggled with SelectToggleDescriptions
     ('d').

     The information displayed with '%F' depends on the  value	of  show_author.
     GroupToggleSubjDisplay   resp.    ThreadToggleSubjDisplay	 ('d')	switches
     through all available options.

     For date representation '%D' uses date_format. It is possible to specify  a
     different	date  format in round brackets (e.g., '%(%d %b %y %H:%M)D'). See
     date_format for more details.

     The length of each item (except '%%') can be defined with a positive number
     after the '%'. The following example displays the score in the thread level
     10 characters wide: '%10S'.

     If the newsgroup name is displayed together with the newsgroup description,
     the width of the newsgroup name can be controlled	via  an  optional  comma
     separated	second	value  (e.g.,  '%60,20G'). It is valid to omit the first
     value (e.g., ('%,20G')). If no second value is given, tin	uses  a  default
     value of 32.

     Some variables do have a default width which may lead to truncation.  Trun-
     cation  for  variables  which  contain only numbers happens by dividing the
     value with a sufficient power of ten and adding a SI suffix to the  result,
     that  is the variable holds a value of 54321 and the width for the variable
     is 4 the result will be "54 k". If that's undesired you have to  specify  a
     larger width manually, e.g., '%6n'. Here is an overview of the defaults:

	Variable  width
	%I	   3
	%L	   4
	%M	  10
	%R	   3
	%S	   6
	%U	   5
	%n	   4

     If  no  length  is  given	for '%D', the length is determined by the format
     string for the date and the date of the current day.  If  the  date  format
     string  contains  weekdays  or  months names it may happen that the date is
     longer than determined in the first pass. In this case, the date  is  trun-
     cated before display. This occurs, for example, if the current month is May
     and  the  article to which the date is displayed was posted in December. In
     such cases it might be useful to determine the maximum length manually  and
     specify the length in the format string.

     In  case  the format string contains '%G' and '%d' and no length are given,
     tin determines the longest newsgroup name and uses this  length  for  '%G'.
     The remaining space will be used for '%d'.

     When  the format string contains the specifier '%F' and '%s' resp. '%T' and
     no length is given, '%F' will use one third and '%s' resp.  '%T'  will  use
     two third of the available space.

     In  addition,  a  minimum or a maximum screen width can be defined for each
     item (except '%%'). In this case, the item will only be displayed when  the
     screen  is  wider	resp. smaller than specified. This comes in handy to not
     overload a small screen but have maximum information on a large screen. The
     minimum screen width has to be specified by a positive number  preceded  by
     an  '>',  the maximum screen width has to be specified by a positive number
     preceded by an '<'. In the following example tin  will  display  the  score
     only if the screen is wider than 100 characters: '%>100S'.

     If both the length and the minimum or maximum screen width should be speci-
     fied for an item, the length must be the first parameter and the minimum or
     maximum screen width must be the second one. The following example displays
     the  score  with a length of 10 characters only if the screen is wider than
     100 characters: '%10>100S'. A second length can be specified for  '%F'  and
     '%s' resp. '%T', separated by a colon, which is used if the minimum or max-
     imum  screen  width  is  not  reached.  If no length is specified after the
     colon, the item is displayed even	if  the  minimum  screen  width  is  not
     reached  and  the length is calculated as if no minimum (or maximum) screen
     width had been specified. In the following example  tin  will  display  the
     subject  with  a  length  of  60 characters if the screen is wider than 100
     characters, otherwise a length of 40 characters is used: '%60>100:40s'.

     The look of the Attachment level and the mime, uue and yenc header at  Page
     level  can  be  customized too via format strings.  The following variables
     are available:

	%C	  Charset
	%c	  Like %C but with description
	%D	  Line count
	%d	  Like %D but with description
	%E	  Content encoding
	%e	  Like %E but with description
	%F	  Current YENC part
	%f	  Like %F but with description
	%G	  Total number of YENC parts
	%g	  Like %G but with description
	%I	  Complete/incomplete UUE/YENC part indicator
	%L	  Language
	%l	  Like %L but with description
	%N	  Name
	%n	  Like %N but with description
	%S	  Content subtype
	%s	  Like %S but with description
	%T	  Content type
	%t	  Like %T but with description
	%V	  Size of the current YENC part in bytes
	%v	  Like %V but with description
	%W	  Total size of all YENC parts in bytes
	%w	  Like %W but with description
	%X	  CRC checksum of current yenc part
	%x	  Like %X but with description
	%Z	  Size in bytes
	%z	  Like %Z but with description
	%%	  %

     Not all items can be used in each variable. The following table provides an
     overview:

	  attachment-	page_mime-   page_uue-	 page_yenc-
	  _format	_format      _format	 _format
     %C        X	    X
     %c        X	    X
     %D        X	    X		 X	     X
     %d        X	    X		 X	     X
     %E        X	    X		 X	     X
     %e        X	    X		 X	     X
     %F 					     X
     %f 					     X
     %G 					     X
     %g 					     X
     %I 				 X	     X
     %L        X	    X
     %l        X	    X
     %N 		    X		 X	     X
     %n 		    X		 X	     X
     %S        X	    X		 X	     X
     %s        X	    X		 X	     X
     %T        X	    X		 X	     X
     %t        X	    X		 X	     X
     %V 					     X
     %v 					     X
     %W 					     X
     %w 					     X
     %X 					     X
     %x 					     X
     %Z        X	    X		 X	     X
     %z        X	    X		 X	     X
     %%        X	    X		 X	     X

     By default, the string is not truncated. If it exceeds the screen width, it
     is wrapped. If the % sign is followed by an exclamation mark ('!') for  up-
     percase  letters,	the  element is omitted if there is not enough space. If
     the % sign is followed by an asterisk ('*') for a lowercase letter, the de-
     scription is omitted if there is not enough space. If the %  sign	is  fol-
     lowed  by an exclamation mark ('!') for a lowercase letter, the description
     is omitted first and then the content. The shortening is always from  right
     to  left,	first the description is omitted and when no more description is
     displayed, the content is omitted. If %T and %S, %F and %G  or  %V  and  %W
     follow  each  other directly a '/' will be inserted in between. %Z will al-
     ways have one decimal point and may have a one letter bi-suffix.

     Defaults for the format strings:

	attachment_format:	      "%T%S%E%C%d"
	page_mime_format:	      "[-- %T%S%*n%z%*l%!c%!d%*e --]"
	page_uue_format:	      "[-- %T%S%*n%I%!d%*e --]"
	page_yenc_format:	      "[-- %*N%!d%I [%F%G]%V%W%X --]"

   TIPS AND TRICKS
     tin can be pretty much be navigated by using the  four  cursor  keys.   The
     left  arrow key goes up a level, the right arrow key goes down a level, the
     up arrow key goes up a line and the down arrow key goes down a line.

     The following newsgroups provide useful information concerning  news  soft-
     ware:
	--news.software.readers  (info. about news user agents tin, rn, nn, slrn
	  etc.)
	--news.software.nntp (info. about NNTP)
	--news.answers (Frequently Asked Questions (FAQ)  about  many  different
	  themes)

     Many  prompts  within  tin  offer a default choice that the cursor is posi-
     tioned on. By pressing '<CR>' the default value is taken.	Most prompts can
     be aborted by pressing '<ESC>'.

     When tin is run in an  xterm(1x)  it  will  resize  itself  each  time  the
     xterm(1x) is resized.

     tin  will	reread the ${TIN_LIBDIR:-NEWSLIBDIR}"/"${TIN_ACTIVEFILE:-active}
     file at set intervals (reread_active_file_secs) to show any  newly  arrived
     news.

     If  you  find  large  number  of  new newsgroups cluttering up your screen,
     pressing SelectToggleReadDisplay ('r') will make them go away.

   XTERM BUTTONS
     If the environment variable $TERM is set to xterm(1x), then button pressing
     can be used to select groups and articles. In this discussion, the  buttons
     are  assumed  to be assigned conventionally (i.e., Button1 is the left but-
     ton).

     In general (i.e., for the group, thread and article menus),

     Button1 (left)
	       enters next (lower) level if you click on an  article,  otherwise
	       pages down.

     Button2 (center)
	       returns to the previous (upper) level if you click on an article,
	       otherwise pages up.

     Button3 (right)
	       positions  on  the article line under mouse cursor, or pages down
	       if you've clicked outside the list of articles.

     In the group selection menu, if the mouse is pointing at a group then:

     left button
	       moves to and selects the group pointed at, just like  SelectRead-
	       Grp ('<CR>').

     center button
	       quits the program, just like Quit ('q').

     right button
	       moves to the group pointed at.

     In  the  article  menu,  if the mouse is pointing at an article (or thread)
     then:

     left button
	       reads  the  article  pointed  at,  just	like   GroupReadBasenote
	       ('<CR>'), or the thread, just like GroupListThd ('l').

     center button
	       exits   the   menu,   catching  up  on  the  group  if  you  have
	       group_catchup_on_exit set in your configuration, just  like  Quit
	       ('q').

     right button
	       moves to the article (or thread) pointed at.

     In the thread menu, if the mouse is pointing at an article then:

     left button
	       reads article pointed at, just like ThreadReadArt ('<CR>').

     center button
	       exits   the   menu,  catching  up  on  the  thread  if  you  have
	       thread_catchup_on_exit set in your configuration, just like  Quit
	       ('q').

     right button
	       moves to the article pointed at.

     In  other	menus  and  areas  button pressing reverts back to usual cut and
     paste of xterm(1x), but after one click of any button.

   INDEX FILES
     If your news server supports NOV index  files  (see  newsoverview(5),  most
     modern  installations  will)  and	you  have a fast connection to your news
     server then this section can be ignored.

     If your news server doesn't support NOV index files or you have a very slow
     connection to your news server then tin can cache the index for each  news-
     group  if	cache_overview_files is set to ON.  Note that this cache can use
     up large amounts of disk space if you read a  lot	of  groups  and/or  high
     traffic   groups.	 To   reduce   the  amount  of	disk  space  used,  com-
     press_overview_files  can	be  set  to  ON.   Be  aware  that  the  use  of
     getart_limit will disable cache_overview_files.

     Each  user  creates/updates  his/her  own	index  files  that are stored in
     ${TIN_INDEX_NEWSDIR:-"${TIN_HOMEDIR:-"$HOME"}/.tin"}/.news/.  If  you   are
     reading via NNTP then the news server name will be appended to keep the in-
     dexes  for  different  servers  separate.	If you are reading off the local
     spool and local overview files already exist then turning on  caching  will
     have no effect. Likewise unless you see significant delays entering a group
     when  reading  via  NNTP then turning on caching will have little or no ef-
     fect.

     Entering a group the first time tends to be slow  because	the  index  file
     must  be  built from scratch. To alleviate the slowness start tin to create
     all index files for the groups you subscribe to with tin -u -v and go for a
     coffee. Subsequent readings of a group will only need to do incremental up-
     dating of the index file and will be much faster as only new articles  will
     need to be cached.

     As  indexing  might  take some time you may want to run tin from the system
     batcher cron(8) with the ''-u'' option:

	    30 6 * * * /usr/local/bin/tin -u

     If you are low on local disk space you should consider  to  manually  purge
     cached data for groups you are not reading anymore with something like:

	    find ${TIN_INDEX_NEWSDIR:-"${TIN_HOMEDIR:-"$HOME"}/.tin"}/.news* \
	    -type f -name "[0-9]*.[0-9]" -atime +28 | xargs rm -f

FILES
     For a detailed description see tin(5).

     $MAILCAPS
     ~/.mailcap
     /etc/mailcap
     /usr/etc/mailcap
     /usr/local/etc/mailcap
     /etc/mail/mailcap

     /usr/local/etc/nntpserver

     ${TIN_HOMEDIR:-"$HOME"}/.cancelsecret

     ${TIN_HOMEDIR:-"$HOME"}/.mime.types
     /usr/local/etc/mime.types
     /etc/tin/mime.types

     ${TIN_HOMEDIR:-"$HOME"}/.newsauth

     ${TIN_HOMEDIR:-"$HOME"}/.newsrc

     ${TIN_HOMEDIR:-"$HOME"}/.tin/$NNTPSERVER/.oldnewsrc

     ${TIN_HOMEDIR:-"$HOME"}/.signature
     ${TIN_HOMEDIR:-"$HOME"}/.Sig

     ${TIN_HOMEDIR:-"$HOME"}/.sigfixed

     ${TIN_HOMEDIR:-"$HOME"}/.tin/.inputhistory

     ${TIN_INDEX_MAILDIR:-"${TIN_HOMEDIR:-"$HOME"}/.tin"}/.mail/

     ${TIN_INDEX_NEWSDIR:-"${TIN_HOMEDIR:-"$HOME"}/.tin"}/.news${NNTPSERVER:+"-$NNTPSERVER"}/

     ${TIN_INDEX_SAVEDIR:-"${TIN_HOMEDIR:-"$HOME"}/.tin"}/.save/

     ${TIN_HOMEDIR:-"$HOME"}/.tin/active.mail

     ${TIN_HOMEDIR:-"$HOME"}/.tin/active.save

     /etc/tin/attributes
     ${TIN_HOMEDIR:-"$HOME"}/.tin/attributes

     ${TIN_HOMEDIR:-"$HOME"}/.tin/filter

     ${TIN_HOMEDIR:-"$HOME"}/.tin/keymap${${LC_ALL:-"${LC_MESSAGES:-"${LC_CTYPE:-"$LANG"}"}"}:+".${LC_ALL:-"${LC_MESSAGES:-"${LC_CTYPE:-"$LANG"}"}"}"}
     /etc/tin/keymap${${LC_ALL:-"${LC_MESSAGES:-"${LC_CTYPE:-"$LANG"}"}"}:+".${LC_ALL:-"${LC_MESSAGES:-"${LC_CTYPE:-"$LANG"}"}"}"}

     ${TIN_HOMEDIR:-"$HOME"}/.tin/mailgroups

     ${TIN_HOMEDIR:-"$HOME"}/.tin/newsrctable

     ${TIN_HOMEDIR:-"$HOME"}/.tin/posted

     ${TIN_HOMEDIR:-"$HOME"}/Mail/posted

     ${TIN_HOMEDIR:-"$HOME"}/.tin/postponed.articles

     ${TIN_HOMEDIR:-"$HOME"}/.tin/$NNTPSERVER/motd

     ${TIN_HOMEDIR:-"$HOME"}/.tin/$NNTPSERVER/msglog

     ${TIN_HOMEDIR:-"$HOME"}/.tin/$NNTPSERVER/newsgroups

     ${TIN_HOMEDIR:-"$HOME"}/.tin/$NNTPSERVER/serverrc

     /etc/tin/tinrc
     ${TIN_HOMEDIR:-"$HOME"}/.tin/tinrc

     /etc/tin/tin.defaults

     /usr/local/share/locale/${LC_MESSAGES}/LC_MESSAGES/tin.mo

     ${TIN_LIBDIR:-NEWSLIBDIR}"/"${TIN_ACTIVEFILE:-active}

     ${TIN_LIBDIR:-NEWSLIBDIR}/active.times

     ${TIN_LIBDIR:-NEWSLIBDIR}/newsgroups

     ${TIN_LIBDIR:-NEWSLIBDIR}/organization

     ${TIN_LIBDIR:-NEWSLIBDIR}/overview.fmt

     ${TIN_LIBDIR:-NEWSLIBDIR}/subscriptions

ENVIRONMENT
     TINRC  Define  this  variable  if	you want to specify command-line options
	    that tin should be started with to save typing them each time it  is
	    started.  The  contents of the environment variable are added to the
	    front of the command-line options before it is parsed therefore  al-
	    lowing  an option specified on the command-line to override the same
	    option specified in the environment.

     TIN_HOMEDIR
	    Define this variable if you  do  not  want	the  .tin  directory  in
	    $HOME/.  E.g.,  if you want all tin's private files in /tmp/.tin you
	    would set $TIN_HOMEDIR to /tmp.

     TIN_INDEX_NEWSDIR
	    Define this variable if you do  not  want  the  .news  directory  in
	    ${TIN_HOMEDIR:-"$HOME"}/.tin/.  E.g., if you want all tin's news in-
	    dex files in /tmp/.news you would set $TIN_INDEX_NEWSDIR to /tmp.

     TIN_INDEX_MAILDIR
	    Define this variable if you do  not  want  the  .mail  directory  in
	    ${TIN_HOMEDIR:-"$HOME"}/.tin/.  E.g., if you want all tin's mail in-
	    dex files in /tmp/.mail you would set $TIN_INDEX_MAILDIR to /tmp.

     TIN_INDEX_SAVEDIR
	    Define this variable if you do  not  want  the  .save  directory  in
	    ${TIN_HOMEDIR:-"$HOME"}/.tin/.  E.g., if you want all tin's save in-
	    dex files in /tmp/.save you would set $TIN_INDEX_SAVEDIR to /tmp.

     TIN_LIBDIR
	    Define this variable if you want to  override  the	NEWSLIBDIR  path
	    that   was	compiled  into	the  tin  binary,  default  is	/usr/lo-
	    cal/news/lib.  If tin is running in NNTP mode setting this	variable
	    has no effect.

     TIN_SPOOLDIR
	    Define  this variable if you want to override the SPOOLDIR path that
	    was compiled into the tin binary, default is /var/news.  If  tin  is
	    running in NNTP mode setting this variable has no effect.

     TIN_NOVROOTDIR
	    Define  this  variable  if	you want to override the NOVROOTDIR path
	    that was compiled into the tin  binary,  default  is  SPOOLDIR  (see
	    above).  If tin is running in NNTP mode setting this variable has no
	    effect.

     TIN_NOVFILENAME
	    Define this variable if you want to override the OVERVIEW_FILE file-
	    name that was compiled into the tin binary, default is .overview. If
	    tin is running in NNTP mode setting this variable has no effect.

     TIN_ACTIVEFILE
	    Define this variable if you want to override  the  NEWSLIBDIR/active
	    path  that	was  compiled  into the tin binary. If tin is running in
	    NNTP mode setting this variable has no effect. If $TIN_LIBDIR is set
	    it is prepended to $TIN_ACTIVEFILE.

     NNTPSERVER
	    The default NNTP server to remotely read news  from.  This	variable
	    only  needs to be set if the ''-r'' command-line option is specified
	    and the file /usr/local/etc/nntpserver does not  exist.  The  ''-g''
	    command line option overrides $NNTPSERVER.

     NNTPPORT
	    The  NNTP TCP-port to read news from. This variable only needs to be
	    set if the TCP-port is not 119 (the default).  The	''-p''	command-
	    line option does override $NNTPPORT.

     NNTPSPORT
	    The NNTPS TCP-port to read news from. This variable only needs to be
	    set  if the TCP-port is not 563 (the default). The ''-p'' and ''-T''
	    command-line options do override $NNTPSPORT.

     DISTRIBUTION
	    Set the article header field ''Distribution:'' to  the  contents  of
	    the variable instead of the system default.

     ISO2ASC
	    Set  the ISO to ASCII charset decoding table character to use in de-
	    coding an article text. Values can range from -1 to 5.

	  -1	 no conversion

	  0	 universal table for many languages

	  1	 single-spacing universal table

	  2	 table for Danish, Dutch, German, Norwegian and Swedish

	  3	 table for Danish, Finnish, Norwegian and Swedish using the  ap-
		 propriate ISO 646 variant

	  4	 table with RFC 1345 codes in brackets

	  5	 table for printers that allow overstriking with backspace

     ORGANIZATION
	    Set  the  article  header field ''Organization:'' to the contents of
	    the variable instead of the system default. If it points to a  read-
	    able file a random line from that file will be used. If reading news
	    on	an Apollo DomainOS machine the environment variable $NEWSORG has
	    to be used instead of $ORGANIZATION.

     NEWSORG (DomainOS)
	    DomainOS specific, same as $ORGANIZATION on other OSs (see above).

     REPLYTO
	    Set the article header field ''Reply-To:''	to  the  return  address
	    specified  by  the	variable.  This is useful if you wish to receive
	    replies at a different address.

     NAME   Overrides the full name given in the gecos-field in /etc/passwd, see
	    also mail_address.

     REALNAME
	    Same as $NAME but with lower priority.

     HOME   Pathname of the user's home directory. See environ(5) for more info.

     MAILER
	    This variable has precedence over the default mailer that is used in
	    all mailing operations within tin.

     MAIL   Full path to the user's mailbox.

     MAILPATH
	    A colon-separated list of filenames which are checked for new  mail.
	    This overrides the $MAIL variable.

     MAILDIR
	    Full  path	to  the user's maildir folder. This is only evaluated if
	    neither $MAILPATH nor $MAIL are set.

     VISUAL
	    This variable has precedence over the default editor  (i.e.,  vi(1))
	    that  is  used  in all editing operations within tin (e.g., posting,
	    replying, follow-ups, ...). Evaluation  order  is  ${VISUAL:-"${EDI-
	    TOR:-vi}"}. See environ(5) for more info.

     EDITOR
	    If	$VISUAL  is unset, then this variable is looked up for a default
	    editor. If $EDITOR and $VISUAL are both unset, tin uses the  systems
	    default  editor  (i.e.,  vi(1)  on UNIX-systems). See environ(5) for
	    more info.

     AUTOSUBSCRIBE
	    A new group is checked against the list of patterns; if it	matches,
	    tin subscribes the user to the group without further query.  See the
	    section  "NEWSGROUP  LISTS	&  WILDCARDS"  for an explanation of the
	    valid syntax. For example, setting

	    AUTOSUBSCRIBE=comp.os.unix.*,talk.*,!talk.politics.*

	    will automatically subscribe the user  to  all  new  groups  in  the
	    comp.os.unix hierarchy, and all talk groups other than talk.politics
	    groups (which will be queried for as usual). Of course this does not
	    work if tin is started with the ''-X'' command-line switch.

     AUTOUNSUBSCRIBE
	    Is handled like the $AUTOSUBSCRIBE variable, but groups matching the
	    list  are unsubscribed from without further query. For example, set-
	    ting

	    AUTOUNSUBSCRIBE=alt.flame.*,u*,!uk.*

	    will automatically unsubscribe  the  user  from  all  new  alt.flame
	    groups and all groups starting with u (university groups) other than
	    UK groups (which will be queried for as usual).

     TMPDIR
	    A pathname of a directory made available for tin to create temporary
	    files.

     MAILCAPS
	    This  variable  can  be used to override the default path search for
	    mailcap(5) files. See also tin(5).

     NOMETAMAIL
	    Set this variable to disable the use of metamail(1) or a replacement
	    (e.g., metamutt).

     MM_CHARSET
	    MIME character set used if not configured  via  the  tinrc	variable
	    mm_charset.

     ISPELL
	    Set  this  variable  to  point to ispell(1) or a replacement and its
	    cmd-line options.

     PGPOPTS
	    Define any additional options that you wish to pass to  your  pgp(1)
	    or gpg(1) program.

     PGPPATH
	    Override  the  name of the pgp(1) directory in $HOME that holds your
	    keys etc..

     GNUPGHOME
	    Override the name of the gpg(1) directory in $HOME that  holds  your
	    keys etc..

     LC_CTYPE
	    This  variable  determines the locale(5) category for character han-
	    dling functions. Usually it determines  the  character  classes  for
	    pattern  matching character classification and case conversion. Cur-
	    rently this is not true for tin (which  temporary  unsets  $LC_CTYPE
	    right  before  any	match  is  done  to avoid confusion).  Its value
	    should be of the form language[_territory][.codeset][@modifier]. See
	    environ(5) for more information.

     LC_MESSAGES
	    Formats of informative and diagnostic messages and	interactive  re-
	    sponses.	Its   value  should  be  of  the  form	language[_terri-
	    tory][.codeset][@modifier]. See locale(5) and  environ(5)  for  more
	    information.

     LC_NUMERIC
	    Numeric  value  formats.  Its  value  should  be  of  the  form lan-
	    guage[_territory][.codeset][@modifier]. See locale(5) and environ(5)
	    for more information.

     LC_TIME
	    Date and time  formats.  Its  value  should  be  of  the  form  lan-
	    guage[_territory][.codeset][@modifier]. See locale(5) and environ(5)
	    for more information.

     LC_ALL
	    This  variable  overrides  the  value  of the $LANG variable and any
	    other $LC_ variable. Its value should be of the form  language[_ter-
	    ritory][.codeset].	See  locale(5)	and environ(5) for more informa-
	    tion.

     LANG   This variable determines the locale(5) category for any category not
	    specifically selected with a variable starting with $LC_. Its  value
	    should be of the form language[_territory][.codeset]. See environ(5)
	    for more information.

     LANGUAGE
	    This  variable  defines a priority list for translations. Whenever a
	    translation is not available the next  language  from  the	list  is
	    tried.   Its  value  should  be  of the form language:language[:lan-
	    guage].  Requires $LC_ALL or $LANG to be  set.  See  environ(5)  for
	    more information.

     COLUMNS
	    A decimal integer > 0 used to indicate the user's preferred width in
	    column positions for the terminal screen or window. If this variable
	    is	unset  or  null,  the  implementation  determines  the number of
	    columns, appropriate for the terminal or window.  When  $COLUMNS  is
	    set,  any  terminal-width information implied by $TERM will be over-
	    ridden. Users and portable applications should not set $COLUMNS  un-
	    less  they	wish to override the system selection and produce output
	    unrelated to the terminal characteristics.

     LINES  A decimal integer > 0 used to indicate the user's  preferred  number
	    of lines on a page or the vertical screen or window size in lines. A
	    line  in  this  case  is a vertical measure large enough to hold the
	    tallest character in the character	set  being  displayed.	If  this
	    variable  is unset or null, the implementation determines the number
	    of lines, appropriate for the terminal or  window.	When  $LINES  is
	    set,  any terminal-height information implied by $TERM will be over-
	    ridden. Users and portable applications should not set $LINES unless
	    they wish to override the system selection.

     TERM   The type of terminal in use. This is used when  looking  up  termcap
	    sequences.	See environ(5) for more information.

     DISPLAY
	    Display name, pointing to the X server; required for xface.

     WINDOWID
	    Used  for  determining  terminal's	X window id; required for xface.
	    Should be set by the terminal emulator.

     SHELL  The  pathname  of  the  user's  login  shell.  Used   to   set   de-
	    fault_shell_command.

     XDG_RUNTIME_DIR
	    The  pathname  of the user's dir to put non-essential run time files
	    into.

SIGNALS
     tin handles a couple of signals:

     SIGHUP
	    Terminate gracefully.

     SIGTERM
	    Terminate gracefully.

     SIGUSR1
	    Terminate gracefully but do not restore terminal (tty).

     SIGUSR2
	    Write out ${TIN_HOMEDIR:-"$HOME"}/.newsrc-file.

SECURITY
     If tin is started in debug mode (''-D n'') it will  create  world	readable
     files in $TMPDIR which may contain sensitive data like the users NNTP pass-
     word  in  clear  text  (if  running  verbose). On multiuser-systems $TMPDIR
     should be set to a safe location before starting  tin  in	(verbose)  debug
     mode (e.g., TMPDIR=$HOME tin -vD NNTP).

     Using  the ''-k'' option to skip certificate verification makes the session
     insecure as the server's certificate is  not  checked;  avoid  this  option
     whenever possible.

     If  the  server does not initially require authentication but supports com-
     pression and compression is requested, tin will exit when authentication is
     required later on. Using the ''-A'' command line option in conjunction with
     ''-C'' circumvents this behavior.

CONFORMING TO
     tin does conform to the Base Definitions volume of  IEEE  Std  1003.1-2008,
     Section  12,  Utility  Conventions (Utility Argument Syntax, Utility Syntax
     Guidelines).

NOTES
     Regular expression support is provided by the PCRE library package  pcre(3)
     or  pcre2(3)  which  is  open source software, written by Philip Hazel, and
     copyright (C) by the University of Cambridge, England.
     <https://www.pcre.org/>

CAVEATS
     Any existing global configuration files in /etc/tin/ are not updated  auto-
     matically, as an ordinary user normally has no write permission at that lo-
     cation.

BUGS
     CNews NNTPd, noffle(1) (<= V1.0-pre5) and NewsCache (<= V1.1.91) can't han-
     dle  pipelined GROUP commands (RFC 3977).	If you run into trouble with any
     of the mentioned historical servers set nntp_pipeline_limit in  ${TIN_HOME-
     DIR:-"$HOME"}/.tin/$NNTPSERVER/serverrc to 1.

     Early  versions  of  NNTPCache (<= 2.3.2) and Leafnode (<= 1.6) had a buggy
     LISTGROUP implementation. If you run into trouble with any of the mentioned
     historical servers use the ''-n'' command-line flag (or  disable  LISTGROUP
     via	      disabled_nntp_cmds	      in	     ${TIN_HOME-
     DIR:-"$HOME"}/.tin/$NNTPSERVER/serverrc).

     Using the ''-C'' (COMPRESS) flag with INN nnrpd versions between 2.6.1  and
     2.7.1  (both  incl.)  may	cause tin to hang and later timeout when used in
     conjunction with the ''-n'' flag or when posting. This has  been  fixed  in
     INN nnrpd version 2.7.2. As a workaround simply don't use ''-C''.

     Before  mailing  a bug-report to <tin-bugs@tin.org> please check if you are
     using the latest (stable) release, and if not, please upgrade first! Have a
     look at the doc/TODO file for known bugs. If you still think you've found a
     bug, please use the BugReport ('R') function and write in	English.  Please
     do NOT enclose a core-file in your bug-report until we request it.

HISTORY
     tin  is  based on the tass(1) newsreader that was developed by Rich Skrenta
     and posted to alt.sources in March 1991; its first version was released  on
     August  23rd  1991.   tass(1) itself was heavily influenced by notesfiles a
     public domain UNIX version of PLATO Notes, developed at the  University  of
     Illinois by Ray Essick and Rob Kolstad in 1982. For a version overview see
     <http://www.tin.org/history.html>.

CREDITS
     Rich Skrenta
	    author of tass(1) v3.2 which this newsreader used as its base.

     Bill Davidsen
	    author of envarg.c environment variable reading routine.

     Mike Gleason
	    author of sigfile.c random signature generation routines.

     Markus Kuhn <Markus.Kuhn@cl.cam.ac.uk>
	    author  of langinfo.c, charset.c and iso2asc.txt ISO-8859-1 documen-
	    tation.

     Arnold D. Robbins
	    author of strftime.c date formatting routine.

     Rich Salz
	    author of wildmat.c pattern matching  and  parsdate.y  date  parsing
	    routines.

     Dave Taylor
	    author of curses.c from the elm(1) mailreader.

     Chris Thewalt
	    author of getline.c emacs(1) style editing routine.

     Steven Madsen
	    for adding pgp(1) (Pretty Good Privacy) support.

     Philip Hazel <ph10@cam.ac.uk>
	    for pcre(3), pcre2(3) (Perl-compatible regular expression library).

     Mark Martinec <mark.martinec@ijs.si>
	    for snprintf(3) and vsnprintf(3) fallbacks.

     Gary S. Brown
	    for crc32() fallback.

     Enrik Berkhan
	    for  the  NNTPS  (NNTP over TLS) and COMPRESS implementation and its
	    preconditions.

AUTHOR
     Iain Lea <iain@bricbrac.de>

MAINTAINER
     Urs Janssen <urs@tin.org>

SEE ALSO
     elm(1), emacs(1), gpg(1), inews(1), ispell(1), lp(1), lpr(1),  metamail(1),
     mutt(1),	noffle(1),   perl(1),  perlre(1),  pgp(1),  rn(1),  sendmail(1),
     shar(1), slrnface(1), tass(1), unshar(1),	uudecode(1),  vi(1),  w2r.pl(1),
     xterm(1x),  heapsort(3),  iconv(3), iconv_open(3), nl_langinfo(3), pcre(3),
     pcre2(3),	 pcrepattern(3),   pcre2pattern(3),    qsort(3),    snprintf(3),
     strftime(3),  vsnprintf(3),  wildmat(3), environ(5), locale(5), mailcap(5),
     mbox(5), mmdf(5), newsoverview(5), tin(5), cron(8),  RFC  1345,  RFC  1524,
     RFC  1952,  RFC  2045,  RFC  2046,  RFC 2047, RFC 2231, RFC 2980, RFC 3156,
     RFC 3977, RFC 4155, RFC 4643, RFC 5198,  RFC  5322,  RFC  5536,  RFC  5537,
     RFC 6048, RFC 6838, RFC 8054, RFC 8143, RFC 8315, RFC 9580

2.6.5				   2025-12-24				  TIN(1)

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