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terminfo(5)			 File Formats			   terminfo(5)

       terminfo	- terminal capability data base


       Terminfo	 is  a data base describing terminals, used by screen-oriented
       programs	such as	nvi(1),	lynx(1), mutt(1), and  other  curses  applica-
       tions,  using  high-level calls to libraries such as curses(3X).	 It is
       also used via low-level calls by	non-curses applications	which  may  be
       screen-oriented (such as	@CLEAR@(1)) or non-screen (such	as @TABS@(1)).

       Terminfo	describes terminals by giving a	set of capabilities which they
       have, by	specifying how to perform screen operations, and by specifying
       padding requirements and	initialization sequences.

       This manual describes ncurses version 6.2 (patch	20200215).

   Terminfo Entry Syntax
       Entries in terminfo consist of a	sequence of fields:

       o   Each	 field	ends  with a comma "," (embedded commas	may be escaped
	   with	a backslash or written as "\054").

       o   White space between fields is ignored.

       o   The first field in a	terminfo entry begins in the first column.

       o   Newlines and	leading	whitespace (spaces or tabs) may	 be  used  for
	   formatting  entries for readability.	 These are removed from	parsed

	   The infocmp -f and -W options rely on this to  format  if-then-else
	   expressions,	 or to enforce maximum line-width.  The	resulting for-
	   matted terminal description can be read by tic.

       o   The first field for each terminal gives the names which  are	 known
	   for the terminal, separated by "|" characters.

	   The first name given	is the most common abbreviation	for the	termi-
	   nal (its primary name), the last name given should be a  long  name
	   fully  identifying  the terminal (see longname(3X)),	and all	others
	   are treated as synonyms (aliases) for the primary terminal name.

	   X/Open Curses advises that all names	but  the  last	should	be  in
	   lower  case	and  contain no	blanks;	the last name may well contain
	   upper case and blanks for readability.

	   This	implementation is not so strict; it allows mixed case  in  the
	   primary name	and aliases.  If the last name has no embedded blanks,
	   it allows that to be	both an	alias and a  verbose  name  (but  will
	   warn	about this ambiguity).

       o   Lines  beginning with a "#" in the first column are treated as com-

	   While comment lines are legal at any	point,	the  output  of	 @CAP-
	   TOINFO@  and	 @INFOTOCAP@  (aliases	for tic) will move comments so
	   they	occur only between entries.

       Terminal	names (except for the last, verbose entry)  should  be	chosen
       using the following conventions.	 The particular	piece of hardware mak-
       ing up the terminal should have a root name, thus "hp2621".  This  name
       should not contain hyphens.  Modes that the hardware can	be in, or user
       preferences, should be indicated	by appending a hyphen and a mode  suf-
       fix.  Thus, a vt100 in 132-column mode would be vt100-w.	 The following
       suffixes	should be used where possible:

	    Suffix		    Meaning		      Example
	    -nn	     Number of lines on	the screen	      aaa-60
	    -np	     Number of pages of	memory		      c100-4p
	    -am	     With automargins (usually the default)   vt100-am
	    -m	     Mono mode;	suppress color		      ansi-m
	    -mc	     Magic cookie; spaces when highlighting   wy30-mc
	    -na	     No	arrow keys (leave them in local)      c100-na
	    -nam     Without automatic margins		      vt100-nam
	    -nl	     No	status line			      att4415-nl
	    -ns	     No	status line			      hp2626-ns
	    -rv	     Reverse video			      c100-rv
	    -s	     Enable status line			      vt100-s
	    -vb	     Use visible bell instead of beep	      wy370-vb
	    -w	     Wide mode (> 80 columns, usually 132)    vt100-w

       For more	on terminal naming conventions,	see the	term(7)	manual page.

   Terminfo Capabilities Syntax
       The terminfo entry consists of  several	capabilities,  i.e.,  features
       that  the  terminal  has, or methods for	exercising the terminal's fea-

       After the first field (giving the name(s) of the	terminal entry), there
       should be one or	more capability	fields.	 These are boolean, numeric or
       string names with corresponding values:

       o   Boolean capabilities	are true  when	present,  false	 when  absent.
	   There is no explicit	value for boolean capabilities.

       o   Numeric  capabilities  have	a  "#" following the name, then	an un-
	   signed decimal integer value.

       o   String capabilities have a "=" following the	name, then  an	string
	   of characters making	up the capability value.

	   String  capabilities	 can be	split into multiple lines, just	as the
	   fields comprising a terminal	 entry	can  be	 split	into  multiple
	   lines.   While  blanks  between fields are ignored, blanks embedded
	   within a string value are retained, except for leading blanks on  a

       Any  capability can be canceled,	i.e., suppressed from the terminal en-
       try, by following its name with "@" rather than a capability value.

   Similar Terminals
       If there	are two	very similar terminals,	one (the variant) can  be  de-
       fined  as being just like the other (the	base) with certain exceptions.
       In the definition of the	variant, the  string  capability  use  can  be
       given with the name of the base terminal:

       o   The	capabilities  given before use override	those in the base type
	   named by use.

       o   If there are	multiple use capabilities, they	are merged in  reverse
	   order.   That  is,  the rightmost use reference is processed	first,
	   then	the one	to its left, and so forth.

       o   Capabilities	given explicitly in the	entry override	those  brought
	   in by use references.

       A capability can	be canceled by placing xx@ to the left of the use ref-
       erence that imports it, where xx	is the capability.  For	 example,  the

	      2621-nl, smkx@, rmkx@, use=2621,

       defines a 2621-nl that does not have the	smkx or	rmkx capabilities, and
       hence does not turn on the function key labels  when  in	 visual	 mode.
       This  is	 useful	 for  different	modes for a terminal, or for different
       user preferences.

       An entry	included via use can contain canceled capabilities, which have
       the  same  effect as if those cancels were inline in the	using terminal

   Predefined Capabilities
       The following is	a complete table of the	 capabilities  included	 in  a
       terminfo	 description  block  and available to terminfo-using code.  In
       each line of the	table,

       The variable is the name	by  which  the	programmer  (at	 the  terminfo
       level) accesses the capability.

       The  capname is the short name used in the text of the database,	and is
       used by a person	updating the database.	 Whenever  possible,  capnames
       are chosen to be	the same as or similar to the ANSI X3.64-1979 standard
       (now superseded by  ECMA-48,  which  uses  identical  or	 very  similar
       names).	 Semantics  are	also intended to match those of	the specifica-

       The termcap code	is the old termcap capability name (some  capabilities
       are new,	and have names which termcap did not originate).

       Capability  names have no hard length limit, but	an informal limit of 5
       characters has been adopted to keep them	short and to allow the tabs in
       the source file Caps to line up nicely.

       Finally,	 the description field attempts	to convey the semantics	of the
       capability.  You	may find some codes in the description field:

       (P)    indicates	that padding may be specified

       #[1-9] in the description field indicates that  the  string  is	passed
	      through tparm with parms as given	(#i).

       (P*)   indicates	 that  padding may vary	in proportion to the number of
	      lines affected

       (#i)   indicates	the ith	parameter.

       These are the boolean capabilities:

		  Variable	      Cap-	TCap	   Description
		  Booleans	      name	Code
	  auto_left_margin	      bw	bw     cub1 wraps from col-
						       umn 0 to	last column
	  auto_right_margin	      am	am     terminal	has auto-
						       matic margins
	  back_color_erase	      bce	ut     screen erased with
						       background color
	  can_change		      ccc	cc     terminal	can re-de-
						       fine existing colors

	  ceol_standout_glitch	      xhp	xs     standout	not erased
						       by overwriting (hp)
	  col_addr_glitch	      xhpa	YA     only positive motion
						       for hpa/mhpa caps
	  cpi_changes_res	      cpix	YF     changing	character
						       pitch changes reso-
	  cr_cancels_micro_mode	      crxm	YB     using cr	turns off
						       micro mode
	  dest_tabs_magic_smso	      xt	xt     tabs destructive,
						       magic so	char
	  eat_newline_glitch	      xenl	xn     newline ignored af-
						       ter 80 cols (con-
	  erase_overstrike	      eo	eo     can erase over-
						       strikes with a blank
	  generic_type		      gn	gn     generic line type
	  hard_copy		      hc	hc     hardcopy	terminal
	  hard_cursor		      chts	HC     cursor is hard to
	  has_meta_key		      km	km     Has a meta key
						       (i.e., sets 8th-bit)
	  has_print_wheel	      daisy	YC     printer needs opera-
						       tor to change char-
						       acter set
	  has_status_line	      hs	hs     has extra status
	  hue_lightness_saturation    hls	hl     terminal	uses only
						       HLS color notation
	  insert_null_glitch	      in	in     insert mode distin-
						       guishes nulls
	  lpi_changes_res	      lpix	YG     changing	line pitch
						       changes resolution
	  memory_above		      da	da     display may be re-
						       tained above the
	  memory_below		      db	db     display may be re-
						       tained below the
	  move_insert_mode	      mir	mi     safe to move while
						       in insert mode
	  move_standout_mode	      msgr	ms     safe to move while
						       in standout mode
	  needs_xon_xoff	      nxon	nx     padding will not
						       work, xon/xoff re-
	  no_esc_ctlc		      xsb	xb     beehive (f1=escape,
						       f2=ctrl C)
	  no_pad_char		      npc	NP     pad character does
						       not exist
	  non_dest_scroll_region      ndscr	ND     scrolling region	is
	  non_rev_rmcup		      nrrmc	NR     smcup does not re-
						       verse rmcup
	  over_strike		      os	os     terminal	can over-
	  prtr_silent		      mc5i	5i     printer will not
						       echo on screen
	  row_addr_glitch	      xvpa	YD     only positive motion
						       for vpa/mvpa caps
	  semi_auto_right_margin      sam	YE     printing	in last
						       column causes cr

	  status_line_esc_ok	      eslok	es     escape can be used
						       on the status line
	  tilde_glitch		      hz	hz     cannot print ~'s
	  transparent_underline	      ul	ul     underline character
	  xon_xoff		      xon	xo     terminal	uses
						       xon/xoff	handshaking

       These are the numeric capabilities:

		  Variable	      Cap-	TCap	   Description
		   Numeric	      name	Code
	  columns		      cols	co     number of columns in
						       a line
	  init_tabs		      it	it     tabs initially every
						       # spaces
	  label_height		      lh	lh     rows in each label
	  label_width		      lw	lw     columns in each la-
	  lines			      lines	li     number of lines on
						       screen or page
	  lines_of_memory	      lm	lm     lines of	memory if >
						       line. 0 means varies
	  magic_cookie_glitch	      xmc	sg     number of blank
						       characters left by
						       smso or rmso
	  max_attributes	      ma	ma     maximum combined	at-
						       tributes	terminal
						       can handle
	  max_colors		      colors	Co     maximum number of
						       colors on screen
	  max_pairs		      pairs	pa     maximum number of
						       color-pairs on the
	  maximum_windows	      wnum	MW     maximum number of
						       definable windows
	  no_color_video	      ncv	NC     video attributes
						       that cannot be used
						       with colors
	  num_labels		      nlab	Nl     number of labels	on
	  padding_baud_rate	      pb	pb     lowest baud rate
						       where padding needed
	  virtual_terminal	      vt	vt     virtual terminal
						       number (CB/unix)
	  width_status_line	      wsl	ws     number of columns in
						       status line

       The following numeric capabilities  are	present	 in  the  SVr4.0  term
       structure,  but	are  not yet documented	in the man page.  They came in
       with SVr4's printer support.

		  Variable	      Cap-	TCap	   Description
		   Numeric	      name	Code
	  bit_image_entwining	      bitwin	Yo     number of passes	for
						       each bit-image row
	  bit_image_type	      bitype	Yp     type of bit-image
	  buffer_capacity	      bufsz	Ya     numbers of bytes
						       buffered	before

	  buttons		      btns	BT     number of buttons on
	  dot_horz_spacing	      spinh	Yc     spacing of dots hor-
						       izontally in dots
						       per inch
	  dot_vert_spacing	      spinv	Yb     spacing of pins ver-
						       tically in pins per
	  max_micro_address	      maddr	Yd     maximum value in	mi-
	  max_micro_jump	      mjump	Ye     maximum value in
	  micro_col_size	      mcs	Yf     character step size
						       when in micro mode
	  micro_line_size	      mls	Yg     line step size when
						       in micro	mode
	  number_of_pins	      npins	Yh     numbers of pins in
	  output_res_char	      orc	Yi     horizontal resolu-
						       tion in units per
	  output_res_horz_inch	      orhi	Yk     horizontal resolu-
						       tion in units per
	  output_res_line	      orl	Yj     vertical	resolution
						       in units	per line
	  output_res_vert_inch	      orvi	Yl     vertical	resolution
						       in units	per inch
	  print_rate		      cps	Ym     print rate in char-
						       acters per second
	  wide_char_size	      widcs	Yn     character step size
						       when in double wide

       These are the string capabilities:

		  Variable	      Cap-	TCap	   Description
		   String	      name	Code
	  acs_chars		      acsc	ac     graphics	charset
						       pairs, based on
	  back_tab		      cbt	bt     back tab	(P)
	  bell			      bel	bl     audible signal
						       (bell) (P)
	  carriage_return	      cr	cr     carriage	return (P*)
	  change_char_pitch	      cpi	ZA     Change number of
						       characters per inch
						       to #1
	  change_line_pitch	      lpi	ZB     Change number of
						       lines per inch to #1
	  change_res_horz	      chr	ZC     Change horizontal
						       resolution to #1
	  change_res_vert	      cvr	ZD     Change vertical res-
						       olution to #1
	  change_scroll_region	      csr	cs     change region to
						       line #1 to line #2
	  char_padding		      rmp	rP     like ip but when	in
						       insert mode
	  clear_all_tabs	      tbc	ct     clear all tab stops
	  clear_margins		      mgc	MC     clear right and left
						       soft margins

	  clear_screen		      clear	cl     clear screen and
						       home cursor (P*)
	  clr_bol		      el1	cb     Clear to	beginning
						       of line
	  clr_eol		      el	ce     clear to	end of line
	  clr_eos		      ed	cd     clear to	end of
						       screen (P*)
	  column_address	      hpa	ch     horizontal position
						       #1, absolute (P)
	  command_character	      cmdch	CC     terminal	settable
						       cmd character in
						       prototype !?
	  create_window		      cwin	CW     define a	window #1
						       from #2,#3 to #4,#5
	  cursor_address	      cup	cm     move to row #1 col-
						       umns #2
	  cursor_down		      cud1	do     down one	line
	  cursor_home		      home	ho     home cursor (if no
	  cursor_invisible	      civis	vi     make cursor invisi-
	  cursor_left		      cub1	le     move left one space
	  cursor_mem_address	      mrcup	CM     memory relative cur-
						       sor addressing, move
						       to row #1 columns #2
	  cursor_normal		      cnorm	ve     make cursor appear
						       normal (undo
	  cursor_right		      cuf1	nd     non-destructive
						       space (move right
						       one space)
	  cursor_to_ll		      ll	ll     last line, first
						       column (if no cup)
	  cursor_up		      cuu1	up     up one line
	  cursor_visible	      cvvis	vs     make cursor very
	  define_char		      defc	ZE     Define a	character
						       #1, #2 dots wide,
						       descender #3
	  delete_character	      dch1	dc     delete character
	  delete_line		      dl1	dl     delete line (P*)
	  dial_phone		      dial	DI     dial number #1
	  dis_status_line	      dsl	ds     disable status line
	  display_clock		      dclk	DK     display clock
	  down_half_line	      hd	hd     half a line down
	  ena_acs		      enacs	eA     enable alternate
						       char set
	  enter_alt_charset_mode      smacs	as     start alternate
						       character set (P)
	  enter_am_mode		      smam	SA     turn on automatic
	  enter_blink_mode	      blink	mb     turn on blinking
	  enter_bold_mode	      bold	md     turn on bold (extra
						       bright) mode
	  enter_ca_mode		      smcup	ti     string to start pro-
						       grams using cup
	  enter_delete_mode	      smdc	dm     enter delete mode
	  enter_dim_mode	      dim	mh     turn on half-bright
	  enter_doublewide_mode	      swidm	ZF     Enter double-wide
	  enter_draft_quality	      sdrfq	ZG     Enter draft-quality

	  enter_insert_mode	      smir	im     enter insert mode
	  enter_italics_mode	      sitm	ZH     Enter italic mode
	  enter_leftward_mode	      slm	ZI     Start leftward car-
						       riage motion
	  enter_micro_mode	      smicm	ZJ     Start micro-motion
	  enter_near_letter_quality   snlq	ZK     Enter NLQ mode
	  enter_normal_quality	      snrmq	ZL     Enter normal-quality
	  enter_protected_mode	      prot	mp     turn on protected
	  enter_reverse_mode	      rev	mr     turn on reverse
						       video mode
	  enter_secure_mode	      invis	mk     turn on blank mode
						       (characters invisi-
	  enter_shadow_mode	      sshm	ZM     Enter shadow-print
	  enter_standout_mode	      smso	so     begin standout mode
	  enter_subscript_mode	      ssubm	ZN     Enter subscript mode
	  enter_superscript_mode      ssupm	ZO     Enter superscript
	  enter_underline_mode	      smul	us     begin underline mode
	  enter_upward_mode	      sum	ZP     Start upward car-
						       riage motion
	  enter_xon_mode	      smxon	SX     turn on xon/xoff
	  erase_chars		      ech	ec     erase #1	characters
	  exit_alt_charset_mode	      rmacs	ae     end alternate char-
						       acter set (P)
	  exit_am_mode		      rmam	RA     turn off	automatic
	  exit_attribute_mode	      sgr0	me     turn off	all at-
	  exit_ca_mode		      rmcup	te     strings to end pro-
						       grams using cup
	  exit_delete_mode	      rmdc	ed     end delete mode
	  exit_doublewide_mode	      rwidm	ZQ     End double-wide mode
	  exit_insert_mode	      rmir	ei     exit insert mode
	  exit_italics_mode	      ritm	ZR     End italic mode
	  exit_leftward_mode	      rlm	ZS     End left-motion mode
	  exit_micro_mode	      rmicm	ZT     End micro-motion
	  exit_shadow_mode	      rshm	ZU     End shadow-print
	  exit_standout_mode	      rmso	se     exit standout mode
	  exit_subscript_mode	      rsubm	ZV     End subscript mode
	  exit_superscript_mode	      rsupm	ZW     End superscript mode
	  exit_underline_mode	      rmul	ue     exit underline mode
	  exit_upward_mode	      rum	ZX     End reverse charac-
						       ter motion
	  exit_xon_mode		      rmxon	RX     turn off	xon/xoff
	  fixed_pause		      pause	PA     pause for 2-3 sec-
	  flash_hook		      hook	fh     flash switch hook
	  flash_screen		      flash	vb     visible bell (may
						       not move	cursor)
	  form_feed		      ff	ff     hardcopy	terminal
						       page eject (P*)
	  from_status_line	      fsl	fs     return from status
	  goto_window		      wingo	WG     go to window #1
	  hangup		      hup	HU     hang-up phone

	  init_1string		      is1	i1     initialization
	  init_2string		      is2	is     initialization
	  init_3string		      is3	i3     initialization
	  init_file		      if	if     name of initializa-
						       tion file
	  init_prog		      iprog	iP     path name of program
						       for initialization
	  initialize_color	      initc	Ic     initialize color	#1
						       to (#2,#3,#4)
	  initialize_pair	      initp	Ip     Initialize color
						       pair #1 to
	  insert_character	      ich1	ic     insert character	(P)
	  insert_line		      il1	al     insert line (P*)
	  insert_padding	      ip	ip     insert padding after
						       inserted	character
	  key_a1		      ka1	K1     upper left of keypad
	  key_a3		      ka3	K3     upper right of key-
	  key_b2		      kb2	K2     center of keypad
	  key_backspace		      kbs	kb     backspace key
	  key_beg		      kbeg	@1     begin key
	  key_btab		      kcbt	kB     back-tab	key
	  key_c1		      kc1	K4     lower left of keypad
	  key_c3		      kc3	K5     lower right of key-
	  key_cancel		      kcan	@2     cancel key
	  key_catab		      ktbc	ka     clear-all-tabs key
	  key_clear		      kclr	kC     clear-screen or
						       erase key
	  key_close		      kclo	@3     close key
	  key_command		      kcmd	@4     command key
	  key_copy		      kcpy	@5     copy key
	  key_create		      kcrt	@6     create key
	  key_ctab		      kctab	kt     clear-tab key
	  key_dc		      kdch1	kD     delete-character	key
	  key_dl		      kdl1	kL     delete-line key
	  key_down		      kcud1	kd     down-arrow key
	  key_eic		      krmir	kM     sent by rmir or smir
						       in insert mode
	  key_end		      kend	@7     end key
	  key_enter		      kent	@8     enter/send key
	  key_eol		      kel	kE     clear-to-end-of-line
	  key_eos		      ked	kS     clear-to-end-of-
						       screen key
	  key_exit		      kext	@9     exit key
	  key_f0		      kf0	k0     F0 function key
	  key_f1		      kf1	k1     F1 function key
	  key_f10		      kf10	k;     F10 function key
	  key_f11		      kf11	F1     F11 function key
	  key_f12		      kf12	F2     F12 function key
	  key_f13		      kf13	F3     F13 function key
	  key_f14		      kf14	F4     F14 function key
	  key_f15		      kf15	F5     F15 function key
	  key_f16		      kf16	F6     F16 function key
	  key_f17		      kf17	F7     F17 function key
	  key_f18		      kf18	F8     F18 function key
	  key_f19		      kf19	F9     F19 function key
	  key_f2		      kf2	k2     F2 function key
	  key_f20		      kf20	FA     F20 function key

	  key_f21		      kf21	FB     F21 function key
	  key_f22		      kf22	FC     F22 function key
	  key_f23		      kf23	FD     F23 function key
	  key_f24		      kf24	FE     F24 function key
	  key_f25		      kf25	FF     F25 function key
	  key_f26		      kf26	FG     F26 function key
	  key_f27		      kf27	FH     F27 function key
	  key_f28		      kf28	FI     F28 function key
	  key_f29		      kf29	FJ     F29 function key
	  key_f3		      kf3	k3     F3 function key
	  key_f30		      kf30	FK     F30 function key
	  key_f31		      kf31	FL     F31 function key
	  key_f32		      kf32	FM     F32 function key
	  key_f33		      kf33	FN     F33 function key
	  key_f34		      kf34	FO     F34 function key
	  key_f35		      kf35	FP     F35 function key
	  key_f36		      kf36	FQ     F36 function key
	  key_f37		      kf37	FR     F37 function key
	  key_f38		      kf38	FS     F38 function key
	  key_f39		      kf39	FT     F39 function key
	  key_f4		      kf4	k4     F4 function key
	  key_f40		      kf40	FU     F40 function key
	  key_f41		      kf41	FV     F41 function key
	  key_f42		      kf42	FW     F42 function key
	  key_f43		      kf43	FX     F43 function key
	  key_f44		      kf44	FY     F44 function key
	  key_f45		      kf45	FZ     F45 function key
	  key_f46		      kf46	Fa     F46 function key
	  key_f47		      kf47	Fb     F47 function key
	  key_f48		      kf48	Fc     F48 function key
	  key_f49		      kf49	Fd     F49 function key
	  key_f5		      kf5	k5     F5 function key
	  key_f50		      kf50	Fe     F50 function key
	  key_f51		      kf51	Ff     F51 function key
	  key_f52		      kf52	Fg     F52 function key
	  key_f53		      kf53	Fh     F53 function key
	  key_f54		      kf54	Fi     F54 function key
	  key_f55		      kf55	Fj     F55 function key
	  key_f56		      kf56	Fk     F56 function key
	  key_f57		      kf57	Fl     F57 function key
	  key_f58		      kf58	Fm     F58 function key
	  key_f59		      kf59	Fn     F59 function key
	  key_f6		      kf6	k6     F6 function key
	  key_f60		      kf60	Fo     F60 function key
	  key_f61		      kf61	Fp     F61 function key
	  key_f62		      kf62	Fq     F62 function key
	  key_f63		      kf63	Fr     F63 function key
	  key_f7		      kf7	k7     F7 function key
	  key_f8		      kf8	k8     F8 function key
	  key_f9		      kf9	k9     F9 function key
	  key_find		      kfnd	@0     find key
	  key_help		      khlp	%1     help key
	  key_home		      khome	kh     home key
	  key_ic		      kich1	kI     insert-character	key
	  key_il		      kil1	kA     insert-line key
	  key_left		      kcub1	kl     left-arrow key
	  key_ll		      kll	kH     lower-left key (home
	  key_mark		      kmrk	%2     mark key
	  key_message		      kmsg	%3     message key
	  key_move		      kmov	%4     move key
	  key_next		      knxt	%5     next key
	  key_npage		      knp	kN     next-page key
	  key_open		      kopn	%6     open key
	  key_options		      kopt	%7     options key

	  key_ppage		      kpp	kP     previous-page key
	  key_previous		      kprv	%8     previous	key
	  key_print		      kprt	%9     print key
	  key_redo		      krdo	%0     redo key
	  key_reference		      kref	&1     reference key
	  key_refresh		      krfr	&2     refresh key
	  key_replace		      krpl	&3     replace key
	  key_restart		      krst	&4     restart key
	  key_resume		      kres	&5     resume key
	  key_right		      kcuf1	kr     right-arrow key
	  key_save		      ksav	&6     save key
	  key_sbeg		      kBEG	&9     shifted begin key
	  key_scancel		      kCAN	&0     shifted cancel key
	  key_scommand		      kCMD	*1     shifted command key
	  key_scopy		      kCPY	*2     shifted copy key
	  key_screate		      kCRT	*3     shifted create key
	  key_sdc		      kDC	*4     shifted delete-char-
						       acter key
	  key_sdl		      kDL	*5     shifted delete-line
	  key_select		      kslt	*6     select key
	  key_send		      kEND	*7     shifted end key
	  key_seol		      kEOL	*8     shifted clear-to-
						       end-of-line key
	  key_sexit		      kEXT	*9     shifted exit key
	  key_sf		      kind	kF     scroll-forward key
	  key_sfind		      kFND	*0     shifted find key
	  key_shelp		      kHLP	#1     shifted help key
	  key_shome		      kHOM	#2     shifted home key
	  key_sic		      kIC	#3     shifted insert-char-
						       acter key
	  key_sleft		      kLFT	#4     shifted left-arrow
	  key_smessage		      kMSG	%a     shifted message key
	  key_smove		      kMOV	%b     shifted move key
	  key_snext		      kNXT	%c     shifted next key
	  key_soptions		      kOPT	%d     shifted options key
	  key_sprevious		      kPRV	%e     shifted previous	key
	  key_sprint		      kPRT	%f     shifted print key
	  key_sr		      kri	kR     scroll-backward key
	  key_sredo		      kRDO	%g     shifted redo key
	  key_sreplace		      kRPL	%h     shifted replace key
	  key_sright		      kRIT	%i     shifted right-arrow
	  key_srsume		      kRES	%j     shifted resume key
	  key_ssave		      kSAV	!1     shifted save key
	  key_ssuspend		      kSPD	!2     shifted suspend key
	  key_stab		      khts	kT     set-tab key
	  key_sundo		      kUND	!3     shifted undo key
	  key_suspend		      kspd	&7     suspend key
	  key_undo		      kund	&8     undo key
	  key_up		      kcuu1	ku     up-arrow	key
	  keypad_local		      rmkx	ke     leave 'key-
						       board_transmit' mode
	  keypad_xmit		      smkx	ks     enter 'key-
						       board_transmit' mode
	  lab_f0		      lf0	l0     label on	function
						       key f0 if not f0
	  lab_f1		      lf1	l1     label on	function
						       key f1 if not f1
	  lab_f10		      lf10	la     label on	function
						       key f10 if not f10
	  lab_f2		      lf2	l2     label on	function
						       key f2 if not f2

	  lab_f3		      lf3	l3     label on	function
						       key f3 if not f3
	  lab_f4		      lf4	l4     label on	function
						       key f4 if not f4
	  lab_f5		      lf5	l5     label on	function
						       key f5 if not f5
	  lab_f6		      lf6	l6     label on	function
						       key f6 if not f6
	  lab_f7		      lf7	l7     label on	function
						       key f7 if not f7
	  lab_f8		      lf8	l8     label on	function
						       key f8 if not f8
	  lab_f9		      lf9	l9     label on	function
						       key f9 if not f9
	  label_format		      fln	Lf     label format
	  label_off		      rmln	LF     turn off	soft labels
	  label_on		      smln	LO     turn on soft labels
	  meta_off		      rmm	mo     turn off	meta mode
	  meta_on		      smm	mm     turn on meta mode
						       (8th-bit	on)
	  micro_column_address	      mhpa	ZY     Like column_address
						       in micro	mode
	  micro_down		      mcud1	ZZ     Like cursor_down	in
						       micro mode
	  micro_left		      mcub1	Za     Like cursor_left	in
						       micro mode
	  micro_right		      mcuf1	Zb     Like cursor_right in
						       micro mode
	  micro_row_address	      mvpa	Zc     Like row_address	#1
						       in micro	mode
	  micro_up		      mcuu1	Zd     Like cursor_up in
						       micro mode
	  newline		      nel	nw     newline (behave like
						       cr followed by lf)
	  order_of_pins		      porder	Ze     Match software bits
						       to print-head pins
	  orig_colors		      oc	oc     Set all color pairs
						       to the original ones
	  orig_pair		      op	op     Set default pair	to
						       its original value
	  pad_char		      pad	pc     padding char (in-
						       stead of	null)
	  parm_dch		      dch	DC     delete #1 characters
	  parm_delete_line	      dl	DL     delete #1 lines (P*)
	  parm_down_cursor	      cud	DO     down #1 lines (P*)
	  parm_down_micro	      mcud	Zf     Like parm_down_cur-
						       sor in micro mode
	  parm_ich		      ich	IC     insert #1 characters
	  parm_index		      indn	SF     scroll forward #1
						       lines (P)
	  parm_insert_line	      il	AL     insert #1 lines (P*)
	  parm_left_cursor	      cub	LE     move #1 characters
						       to the left (P)
	  parm_left_micro	      mcub	Zg     Like parm_left_cur-
						       sor in micro mode
	  parm_right_cursor	      cuf	RI     move #1 characters
						       to the right (P*)
	  parm_right_micro	      mcuf	Zh     Like parm_right_cur-
						       sor in micro mode
	  parm_rindex		      rin	SR     scroll back #1 lines
	  parm_up_cursor	      cuu	UP     up #1 lines (P*)

	  parm_up_micro		      mcuu	Zi     Like parm_up_cursor
						       in micro	mode
	  pkey_key		      pfkey	pk     program function	key
						       #1 to type string #2
	  pkey_local		      pfloc	pl     program function	key
						       #1 to execute string
	  pkey_xmit		      pfx	px     program function	key
						       #1 to transmit
						       string #2
	  plab_norm		      pln	pn     program label #1	to
						       show string #2
	  print_screen		      mc0	ps     print contents of
	  prtr_non		      mc5p	pO     turn on printer for
						       #1 bytes
	  prtr_off		      mc4	pf     turn off	printer
	  prtr_on		      mc5	po     turn on printer
	  pulse			      pulse	PU     select pulse dialing
	  quick_dial		      qdial	QD     dial number #1 with-
						       out checking
	  remove_clock		      rmclk	RC     remove clock
	  repeat_char		      rep	rp     repeat char #1 #2
						       times (P*)
	  req_for_input		      rfi	RF     send next input char
						       (for ptys)
	  reset_1string		      rs1	r1     reset string
	  reset_2string		      rs2	r2     reset string
	  reset_3string		      rs3	r3     reset string
	  reset_file		      rf	rf     name of reset file
	  restore_cursor	      rc	rc     restore cursor to
						       position	of last
	  row_address		      vpa	cv     vertical	position #1
						       absolute	(P)
	  save_cursor		      sc	sc     save current cursor
						       position	(P)
	  scroll_forward	      ind	sf     scroll text up (P)
	  scroll_reverse	      ri	sr     scroll text down	(P)
	  select_char_set	      scs	Zj     Select character
						       set, #1
	  set_attributes	      sgr	sa     define video at-
						       tributes	#1-#9 (PG9)
	  set_background	      setb	Sb     Set background color
	  set_bottom_margin	      smgb	Zk     Set bottom margin at
						       current line
	  set_bottom_margin_parm      smgbp	Zl     Set bottom margin at
						       line #1 or (if smgtp
						       is not given) #2
						       lines from bottom
	  set_clock		      sclk	SC     set clock, #1 hrs #2
						       mins #3 secs
	  set_color_pair	      scp	sp     Set current color
						       pair to #1
	  set_foreground	      setf	Sf     Set foreground color
	  set_left_margin	      smgl	ML     set left	soft margin
						       at current col-
						       umn.	See smgl.
						       (ML is not in BSD
	  set_left_margin_parm	      smglp	Zm     Set left	(right)
						       margin at column	#1

	  set_right_margin	      smgr	MR     set right soft mar-
						       gin at current col-
	  set_right_margin_parm	      smgrp	Zn     Set right margin	at
						       column #1
	  set_tab		      hts	st     set a tab in every
						       row, current columns
	  set_top_margin	      smgt	Zo     Set top margin at
						       current line
	  set_top_margin_parm	      smgtp	Zp     Set top (bottom)
						       margin at row #1
	  set_window		      wind	wi     current window is
						       lines #1-#2 cols
	  start_bit_image	      sbim	Zq     Start printing bit
						       image graphics
	  start_char_set_def	      scsd	Zr     Start character set
						       definition #1, with
						       #2 characters in	the
	  stop_bit_image	      rbim	Zs     Stop printing bit
						       image graphics
	  stop_char_set_def	      rcsd	Zt     End definition of
						       character set #1
	  subscript_characters	      subcs	Zu     List of subscript-
						       able characters
	  superscript_characters      supcs	Zv     List of superscript-
						       able characters
	  tab			      ht	ta     tab to next 8-space
						       hardware	tab stop
	  these_cause_cr	      docr	Zw     Printing	any of
						       these characters
						       causes CR
	  to_status_line	      tsl	ts     move to status line,
						       column #1
	  tone			      tone	TO     select touch tone
	  underline_char	      uc	uc     underline char and
						       move past it
	  up_half_line		      hu	hu     half a line up
	  user0			      u0	u0     User string #0
	  user1			      u1	u1     User string #1
	  user2			      u2	u2     User string #2
	  user3			      u3	u3     User string #3
	  user4			      u4	u4     User string #4
	  user5			      u5	u5     User string #5
	  user6			      u6	u6     User string #6
	  user7			      u7	u7     User string #7
	  user8			      u8	u8     User string #8
	  user9			      u9	u9     User string #9
	  wait_tone		      wait	WA     wait for	dial-tone
	  xoff_character	      xoffc	XF     XOFF character
	  xon_character		      xonc	XN     XON character
	  zero_motion		      zerom	Zx     No motion for subse-
						       quent character

       The following string capabilities are present in	the SVr4.0 term	struc-
       ture, but were originally not documented	in the man page.

		  Variable	      Cap-	 TCap	   Description
		   String	      name	 Code
	  alt_scancode_esc	      scesa	 S8	Alternate escape
							for scancode emu-

	  bit_image_carriage_return   bicr	 Yv	Move to	beginning
							of same	row
	  bit_image_newline	      binel	 Zz	Move to	next row
							of the bit image
	  bit_image_repeat	      birep	 Xy	Repeat bit image
							cell #1	#2 times
	  char_set_names	      csnm	 Zy	Produce	#1'th item
							from list of char-
							acter set names
	  code_set_init		      csin	 ci	Init sequence for
							multiple codesets
	  color_names		      colornm	 Yw	Give name for
							color #1
	  define_bit_image_region     defbi	 Yx	Define rectangular
							bit image region
	  device_type		      devt	 dv	Indicate lan-
							guage/codeset sup-
	  display_pc_char	      dispc	 S1	Display	PC charac-
							ter #1
	  end_bit_image_region	      endbi	 Yy	End a bit-image
	  enter_pc_charset_mode	      smpch	 S2	Enter PC character
							display	mode
	  enter_scancode_mode	      smsc	 S4	Enter PC scancode
	  exit_pc_charset_mode	      rmpch	 S3	Exit PC	character
							display	mode
	  exit_scancode_mode	      rmsc	 S5	Exit PC	scancode
	  get_mouse		      getm	 Gm	Curses should get
							button events, pa-
							rameter	#1 not
	  key_mouse		      kmous	 Km	Mouse event has
	  mouse_info		      minfo	 Mi	Mouse status in-
	  pc_term_options	      pctrm	 S6	PC terminal op-
	  pkey_plab		      pfxl	 xl	Program	function
							key #1 to type
							string #2 and show
							string #3
	  req_mouse_pos		      reqmp	 RQ	Request	mouse po-
	  scancode_escape	      scesc	 S7	Escape for scan-
							code emulation
	  set0_des_seq		      s0ds	 s0	Shift to codeset 0
							(EUC set 0, ASCII)
	  set1_des_seq		      s1ds	 s1	Shift to codeset 1
	  set2_des_seq		      s2ds	 s2	Shift to codeset 2
	  set3_des_seq		      s3ds	 s3	Shift to codeset 3
	  set_a_background	      setab	 AB	Set background
							color to #1, using
							ANSI escape
	  set_a_foreground	      setaf	 AF	Set foreground
							color to #1, using
							ANSI escape
	  set_color_band	      setcolor	 Yz	Change to ribbon
							color #1

	  set_lr_margin		      smglr	 ML	Set both left and
							right margins to
							#1, #2.	 (ML is
							not in BSD term-
	  set_page_length	      slines	 YZ	Set page length	to
							#1 lines
	  set_tb_margin		      smgtb	 MT	Sets both top and
							bottom margins to
							#1, #2

	The  XSI Curses	standard added these hardcopy capabilities.  They were
	used in	some post-4.1 versions of System V curses, e.g.,  Solaris  2.5
	and  IRIX  6.x.	 Except	for YI,	the ncurses termcap names for them are
	invented.  According to	the XSI	Curses standard, they have no  termcap
	names.	 If  your compiled terminfo entries use	these, they may	not be
	binary-compatible with System V	terminfo entries after SVr4.1; beware!

		  Variable	      Cap-	TCap	   Description
		   String	      name	Code
	  enter_horizontal_hl_mode    ehhlm	Xh     Enter horizontal
						       highlight mode
	  enter_left_hl_mode	      elhlm	Xl     Enter left highlight
	  enter_low_hl_mode	      elohlm	Xo     Enter low highlight
	  enter_right_hl_mode	      erhlm	Xr     Enter right high-
						       light mode
	  enter_top_hl_mode	      ethlm	Xt     Enter top highlight
	  enter_vertical_hl_mode      evhlm	Xv     Enter vertical high-
						       light mode
	  set_a_attributes	      sgr1	sA     Define second set of
						       video attributes
	  set_pglen_inch	      slength	YI     Set page	length to
						       #1 hundredth of an
						       inch (some implemen-
						       tations use sL for

   User-Defined	Capabilities
       The preceding section listed the	predefined  capabilities.   They  deal
       with  some special features for terminals no longer (or possibly	never)
       produced.  Occasionally there are special features of  newer  terminals
       which  are awkward or impossible	to represent by	reusing	the predefined

       ncurses addresses this limitation by  allowing  user-defined  capabili-
       ties.  The tic and infocmp programs provide the -x option for this pur-
       pose.  When -x is set, tic treats unknown capabilities as user-defined.
       That  is,  if tic encounters a capability name which it does not	recog-
       nize, it	infers its type	(boolean, number or string)  from  the	syntax
       and  makes  an  extended	 table entry for that capability.  The use_ex-
       tended_names(3X)	function makes this information	 conditionally	avail-
       able  to	 applications.	 The ncurses library provides the data leaving
       most of the behavior to applications:

       o   User-defined	capability strings whose  name	begins	with  "k"  are
	   treated as function keys.

       o   The	types  (boolean,  number, string) determined by	tic can	be in-
	   ferred by successful	calls on tigetflag, etc.

       o   If the capability name happens to be	two characters,	the capability
	   is also available through the termcap interface.

       While termcap is	said to	be extensible because it does not use a	prede-
       fined set of capabilities, in practice it has been limited to the capa-
       bilities	 defined by terminfo implementations.  As a rule, user-defined
       capabilities intended for use by	termcap	applications should be limited
       to  booleans  and numbers to avoid running past the 1023	byte limit as-
       sumed by	termcap	implementations	and their applications.	  In  particu-
       lar,  providing	extended  sets	of function keys (past the 60 numbered
       keys and	the handful of special named keys)  is	best  done  using  the
       longer names available using terminfo.

   A Sample Entry
       The following entry, describing an ANSI-standard	terminal, is represen-
       tative of what a	terminfo entry for a modern terminal  typically	 looks

       ansi|ansi/pc-term compatible with color,
	       am, mc5i, mir, msgr,
	       colors#8, cols#80, it#8,	lines#24, ncv#3, pairs#64,
	       bel=^G, blink=\E[5m, bold=\E[1m,	cbt=\E[Z, clear=\E[H\E[J,
	       cr=^M, cub=\E[%p1%dD, cub1=\E[D,	cud=\E[%p1%dB, cud1=\E[B,
	       cuf=\E[%p1%dC, cuf1=\E[C, cup=\E[%i%p1%d;%p2%dH,
	       cuu=\E[%p1%dA, cuu1=\E[A, dch=\E[%p1%dP,	dch1=\E[P,
	       dl=\E[%p1%dM, dl1=\E[M, ech=\E[%p1%dX, ed=\E[J, el=\E[K,
	       el1=\E[1K, home=\E[H, hpa=\E[%i%p1%dG, ht=\E[I, hts=\EH,
	       ich=\E[%p1%d@, il=\E[%p1%dL, il1=\E[L, ind=^J,
	       indn=\E[%p1%dS, invis=\E[8m, kbs=^H, kcbt=\E[Z, kcub1=\E[D,
	       kcud1=\E[B, kcuf1=\E[C, kcuu1=\E[A, khome=\E[H, kich1=\E[L,
	       mc4=\E[4i, mc5=\E[5i, nel=\r\E[S, op=\E[39;49m,
	       rep=%p1%c\E[%p2%{1}%-%db, rev=\E[7m, rin=\E[%p1%dT,
	       rmacs=\E[10m, rmpch=\E[10m, rmso=\E[m, rmul=\E[m,
	       s0ds=\E(B, s1ds=\E)B, s2ds=\E*B,	s3ds=\E+B,
	       setab=\E[4%p1%dm, setaf=\E[3%p1%dm,
	       sgr0=\E[0;10m, smacs=\E[11m, smpch=\E[11m, smso=\E[7m,
	       smul=\E[4m, tbc=\E[3g, u6=\E[%i%d;%dR, u7=\E[6n,
	       u8=\E[?%[;0123456789]c, u9=\E[c,	vpa=\E[%i%p1%dd,

       Entries	may continue onto multiple lines by placing white space	at the
       beginning of each line except the first.	 Comments may be  included  on
       lines beginning with "#".  Capabilities in terminfo are of three	types:

       o   Boolean capabilities	which indicate that the	terminal has some par-
	   ticular feature,

       o   numeric capabilities	giving the size	of the terminal	or the size of
	   particular delays, and

       o   string  capabilities,  which	 give  a sequence which	can be used to
	   perform particular terminal operations.

   Types of Capabilities
       All capabilities	have names.  For instance, the fact that ANSI-standard
       terminals  have	automatic margins (i.e., an automatic return and line-
       feed when the end of a line is reached) is indicated by the  capability
       am.   Hence  the	description of ansi includes am.  Numeric capabilities
       are followed by the character "#" and  then  a  positive	 value.	  Thus
       cols, which indicates the number	of columns the terminal	has, gives the
       value "80" for ansi.  Values for	numeric	capabilities may be  specified
       in decimal, octal or hexadecimal, using the C programming language con-
       ventions	(e.g., 255, 0377 and 0xff or 0xFF).

       Finally,	string valued capabilities, such as el (clear to end  of  line
       sequence)  are  given  by  the  two-character  code, an "=", and	then a
       string ending at	the next following ",".

       A number	of escape sequences are	provided in the	string valued capabil-
       ities for easy encoding of characters there:

       o   Both	\E and \e map to an ESCAPE character,

       o   ^x maps to a	control-x for any appropriate x, and

       o   the sequences

	     \n, \l, \r, \t, \b, \f, and \s


	     newline, line-feed, return, tab, backspace, form-feed, and	space,


       X/Open Curses does not say what "appropriate x" might be.  In practice,
       that is a printable ASCII graphic character.  The special case "^?"  is
       interpreted  as	DEL (127).  In all other cases,	the character value is
       AND'd with 0x1f,	mapping	to ASCII control codes in the range 0  through

       Other escapes include

       o   \^ for ^,

       o   \\ for \,

       o   \, for comma,

       o   \: for :,

       o   and \0 for null.

	   \0 will produce \200, which does not	terminate a string but behaves
	   as a	null character on most terminals, providing CS7	is  specified.
	   See stty(1).

	   The	reason	for  this quirk	is to maintain binary compatibility of
	   the compiled	terminfo files with other implementations,  e.g.,  the
	   SVr4	 systems,  which  document  this.  Compiled terminfo files use
	   null-terminated strings, with no lengths.  Modifying	this would re-
	   quire  a  new binary	format,	which would not	work with other	imple-

       Finally,	characters may be given	as three octal digits after a \.

       A delay in milliseconds may appear anywhere in a	string capability, en-
       closed  in $<..>	brackets, as in	el=\EK$<5>, and	padding	characters are
       supplied	by tputs(3X) to	provide	this delay.

       o   The delay must be a number with at most one decimal place of	preci-
	   sion; it may	be followed by suffixes	"*" or "/" or both.

       o   A  "*"  indicates  that the padding required	is proportional	to the
	   number of lines affected by the operation, and the amount given  is
	   the	per-affected-unit  padding  required.	(In the	case of	insert
	   character, the factor is still the number of	lines affected.)

	   Normally, padding is	advisory if the	device has the xon capability;
	   it is used for cost computation but does not	trigger	delays.

       o   A  "/"  suffix indicates that the padding is	mandatory and forces a
	   delay of the	given number of	milliseconds even on devices for which
	   xon is present to indicate flow control.

       Sometimes  individual  capabilities must	be commented out.  To do this,
       put a period before the capability name.	 For example, see  the	second
       ind in the example above.

   Fetching Compiled Descriptions
       The  ncurses  library  searches	for  terminal  descriptions in several
       places.	It uses	only the first description found.  The library	has  a
       compiled-in  list  of places to search which can	be overridden by envi-
       ronment variables.  Before starting to search, ncurses  eliminates  du-
       plicates	in its search list.

       o   If  the  environment	variable TERMINFO is set, it is	interpreted as
	   the pathname	of a directory containing the compiled description you
	   are working on.  Only that directory	is searched.

       o   If  TERMINFO	is not set, ncurses will instead look in the directory
	   $HOME/.terminfo for a compiled description.

       o   Next, if the	environment variable  TERMINFO_DIRS  is	 set,  ncurses
	   will	 interpret  the	 contents of that variable as a	list of	colon-
	   separated directories (or database files) to	be searched.

	   An empty directory name (i.e., if the variable begins or ends  with
	   a  colon, or	contains adjacent colons) is interpreted as the	system
	   location /usr/share/misc/terminfo.

       o   Finally, ncurses searches these compiled-in locations:

	   o   a list of directories (@TERMINFO_DIRS@),	and

	   o   the system terminfo  directory,	/usr/share/misc/terminfo  (the
	       compiled-in default).

   Preparing Descriptions
       We  now outline how to prepare descriptions of terminals.  The most ef-
       fective way to prepare a	terminal description is	by imitating  the  de-
       scription  of a similar terminal	in terminfo and	to build up a descrip-
       tion gradually, using  partial  descriptions  with  vi  or  some	 other
       screen-oriented	program	to check that they are correct.	 Be aware that
       a very unusual terminal may expose deficiencies in the ability  of  the
       terminfo	file to	describe it or bugs in the screen-handling code	of the
       test program.

       To get the padding for insert line right	(if the	terminal  manufacturer
       did  not	 document  it)	a  severe test is to edit a large file at 9600
       baud, delete 16 or so lines from	the middle of the screen, then hit the
       "u" key several times quickly.  If the terminal messes up, more padding
       is usually needed.  A similar test can be used for insert character.

   Basic Capabilities
       The number of columns on	each line for the terminal  is	given  by  the
       cols  numeric capability.  If the terminal is a CRT, then the number of
       lines on	the screen is given by the lines capability.  If the  terminal
       wraps  around  to  the  beginning  of the next line when	it reaches the
       right margin, then it should have the am	capability.  If	 the  terminal
       can  clear  its	screen,	 leaving the cursor in the home	position, then
       this is given by	the clear string capability.  If  the  terminal	 over-
       strikes	(rather	 than  clearing	 a position when a character is	struck
       over) then it should have the os	capability.   If  the  terminal	 is  a
       printing	terminal, with no soft copy unit, give it both hc and os.  (os
       applies to storage scope	terminals, such	as TEKTRONIX 4010  series,  as
       well  as	 hard copy and APL terminals.)	If there is a code to move the
       cursor to the left edge of the current row, give	this as	cr.  (Normally
       this  will  be carriage return, control/M.)  If there is	a code to pro-
       duce an audible signal (bell, beep, etc)	give this as bel.

       If there	is a code to move the cursor one position to the left (such as
       backspace)  that	 capability should be given as cub1.  Similarly, codes
       to move to the right, up, and down should be given as cuf1,  cuu1,  and
       cud1.   These  local cursor motions should not alter the	text they pass
       over, for example, you would not	 normally  use	"cuf1= "  because  the
       space would erase the character moved over.

       A very important	point here is that the local cursor motions encoded in
       terminfo	are undefined at the left and top edges	 of  a	CRT  terminal.
       Programs	should never attempt to	backspace around the left edge,	unless
       bw is given, and	never attempt to go up locally off the top.  In	 order
       to  scroll  text	up, a program will go to the bottom left corner	of the
       screen and send the ind (index) string.

       To scroll text down, a program goes to  the  top	 left  corner  of  the
       screen and sends	the ri (reverse	index) string.	The strings ind	and ri
       are undefined when not on their respective corners of the screen.

       Parameterized versions of the scrolling	sequences  are	indn  and  rin
       which  have  the	same semantics as ind and ri except that they take one
       parameter, and scroll that many lines.  They are	also undefined	except
       at the appropriate edge of the screen.

       The  am capability tells	whether	the cursor sticks at the right edge of
       the screen when text is output, but this	does not necessarily apply  to
       a  cuf1	from  the last column.	The only local motion which is defined
       from the	left edge is if	bw is given, then a cub1 from  the  left  edge
       will  move  to the right	edge of	the previous row.  If bw is not	given,
       the effect is undefined.	 This is useful	for drawing a box  around  the
       edge of the screen, for example.	 If the	terminal has switch selectable
       automatic margins, the terminfo file usually assumes that this  is  on;
       i.e.,  am.  If the terminal has a command which moves to	the first col-
       umn of the next line, that command can be given as nel  (newline).   It
       does  not  matter  if  the  command clears the remainder	of the current
       line, so	if the terminal	has no cr and lf it may	still be  possible  to
       craft a working nel out of one or both of them.

       These capabilities suffice to describe hard-copy	and "glass-tty"	termi-
       nals.  Thus the model 33	teletype is described as

       33|tty33|tty|model 33 teletype,
	       bel=^G, cols#72,	cr=^M, cud1=^J,	hc, ind=^J, os,

       while the Lear Siegler ADM-3 is described as

       adm3|3|lsi adm3,
	       am, bel=^G, clear=^Z, cols#80, cr=^M, cub1=^H, cud1=^J,
	       ind=^J, lines#24,

   Parameterized Strings
       Cursor addressing and other strings requiring parameters	in the	termi-
       nal  are	 described  by a parameterized string capability, with printf-
       like escapes such as %x in it.  For example, to address the cursor, the
       cup  capability	is  given, using two parameters: the row and column to
       address to.  (Rows and columns are numbered from	zero and refer to  the
       physical	screen visible to the user, not	to any unseen memory.)	If the
       terminal	has memory relative cursor addressing, that can	 be  indicated
       by mrcup.

       The  parameter mechanism	uses a stack and special % codes to manipulate
       it.  Typically a	sequence will push one	of  the	 parameters  onto  the
       stack  and  then	print it in some format.  Print	(e.g., "%d") is	a spe-
       cial case.  Other operations, including "%t" pop	their operand from the
       stack.	It  is noted that more complex operations are often necessary,
       e.g., in	the sgr	string.

       The % encodings have the	following meanings:

       %%   outputs "%"

	    as in printf(3), flags are [-+#] and space.	 Use a	":"  to	 allow
	    the	next character to be a "-" flag, avoiding interpreting "%-" as
	    an operator.

       %c   print pop()	like %c	in printf

       %s   print pop()	like %s	in printf

	    push i'th parameter

	    set	dynamic	variable [a-z] to pop()

	    get	dynamic	variable [a-z] and push	it

	    set	static variable	[a-z] to pop()

	    get	static variable	[a-z] and push it

	    The	terms "static" and "dynamic"  are  misleading.	 Historically,
	    these are simply two different sets	of variables, whose values are
	    not	reset between calls to tparm(3X).  However, that fact  is  not
	    documented in other	implementations.  Relying on it	will adversely
	    impact portability to other	implementations.

       %'c' char constant c

	    integer constant nn

       %l   push strlen(pop)

       %+, %-, %*, %/, %m
	    arithmetic (%m is mod): push(pop() op pop())

       %&, %|, %^
	    bit	operations (AND, OR and	exclusive-OR): push(pop() op pop())

       %=, %>, %<
	    logical operations:	push(pop() op pop())

       %A, %O
	    logical AND	and OR operations (for conditionals)

       %!, %~
	    unary operations (logical and bit complement): push(op pop())

       %i   add	1 to first two parameters (for ANSI terminals)

       %? expr %t thenpart %e elsepart %;
	    This forms an if-then-else.	 The %e	elsepart is optional.  Usually
	    the	 %?  expr  part	 pushes	a value	onto the stack,	and %t pops it
	    from the stack, testing if it is nonzero (true).  If  it  is  zero
	    (false), control passes to the %e (else) part.

	    It is possible to form else-if's a la Algol	68:
	    %? c1 %t b1	%e c2 %t b2 %e c3 %t b3	%e c4 %t b4 %e %;

	    where ci are conditions, bi	are bodies.

	    Use	 the  -f  option of tic	or infocmp to see the structure	of if-
	    then-else's.  Some strings,	e.g., sgr can be very complicated when
	    written  on	 one line.  The	-f option splits the string into lines
	    with the parts indented.

       Binary operations are in	postfix	form with the operands	in  the	 usual
       order.  That is,	to get x-5 one would use "%gx%{5}%-".  %P and %g vari-
       ables are persistent across escape-string evaluations.

       Consider	the HP2645, which, to get to row 3 and column 12, needs	to  be
       sent  \E&a12c03Y	padded for 6 milliseconds.  Note that the order	of the
       rows and	columns	is inverted here, and that  the	 row  and  column  are
       printed	  as	two    digits.	   Thus	   its	 cup   capability   is

       The Microterm ACT-IV needs the current row and column sent preceded  by
       a   ^T,	 with	the   row   and	  column  simply  encoded  in  binary,
       "cup=^T%p1%c%p2%c".  Terminals which  use  "%c"	need  to  be  able  to
       backspace  the cursor (cub1), and to move the cursor up one line	on the
       screen (cuu1).  This is necessary because it  is	 not  always  safe  to
       transmit	 \n ^D and \r, as the system may change	or discard them.  (The
       library routines	dealing	with terminfo set tty modes so that  tabs  are
       never  expanded,	so \t is safe to send.	This turns out to be essential
       for the Ann Arbor 4080.)

       A final example is the LSI ADM-3a, which	uses row and column offset  by
       a blank character, thus "cup=\E=%p1%' '%+%c%p2%'	'%+%c".	 After sending
       "\E=", this pushes the first parameter, pushes the ASCII	 value	for  a
       space (32), adds	them (pushing the sum on the stack in place of the two
       previous	values)	and outputs that value as a character.	Then the  same
       is  done	for the	second parameter.  More	complex	arithmetic is possible
       using the stack.

   Cursor Motions
       If the terminal has a fast way to home the cursor (to very  upper  left
       corner  of screen) then this can	be given as home; similarly a fast way
       of getting to the lower left-hand corner	can be given as	ll;  this  may
       involve going up	with cuu1 from the home	position, but a	program	should
       never do	this itself (unless ll does) because it	can make no assumption
       about  the  effect  of moving up	from the home position.	 Note that the
       home position is	the same as addressing to (0,0): to the	top left  cor-
       ner of the screen, not of memory.  (Thus, the \EH sequence on HP	termi-
       nals cannot be used for home.)

       If the terminal has row or column absolute cursor addressing, these can
       be  given as single parameter capabilities hpa (horizontal position ab-
       solute) and vpa (vertical  position  absolute).	 Sometimes  these  are
       shorter	than  the  more	 general  two  parameter sequence (as with the
       hp2645) and can be used in preference to	cup.  If there are  parameter-
       ized  local  motions  (e.g.,  move  n spaces to the right) these	can be
       given as	cud, cub, cuf, and cuu with a single parameter indicating  how
       many  spaces  to	move.  These are primarily useful if the terminal does
       not have	cup, such as the TEKTRONIX 4025.

       If the terminal needs to	be in a	special	mode when  running  a  program
       that uses these capabilities, the codes to enter	and exit this mode can
       be given	as smcup and rmcup.  This arises, for example, from  terminals
       like  the  Concept  with	more than one page of memory.  If the terminal
       has only	memory relative	cursor addressing and not screen relative cur-
       sor addressing, a one screen-sized window must be fixed into the	termi-
       nal for cursor addressing to work properly.  This is also used for  the
       TEKTRONIX  4025,	 where	smcup sets the command character to be the one
       used by terminfo.  If the smcup sequence	will not  restore  the	screen
       after an	rmcup sequence is output (to the state prior to	outputting rm-
       cup), specify nrrmc.

   Area	Clears
       If the terminal can clear from the current position to the end  of  the
       line,  leaving  the cursor where	it is, this should be given as el.  If
       the terminal can	clear from the beginning of the	line  to  the  current
       position	 inclusive,  leaving  the  cursor  where it is,	this should be
       given as	el1.  If the terminal can clear	from the current  position  to
       the  end	 of  the display, then this should be given as ed.  Ed is only
       defined from the	first column of	a line.	 (Thus,	it can be simulated by
       a request to delete a large number of lines, if a true ed is not	avail-

   Insert/delete line and vertical motions
       If the terminal can open	a new blank line before	 the  line  where  the
       cursor  is,  this  should  be  given as il1; this is done only from the
       first position of a line.  The cursor must then	appear	on  the	 newly
       blank  line.   If  the terminal can delete the line which the cursor is
       on, then	this should be given as	dl1; this is done only from the	 first
       position	on the line to be deleted.  Versions of	il1 and	dl1 which take
       a single	parameter and insert or	delete that many lines can be given as
       il and dl.

       If  the	terminal  has a	settable scrolling region (like	the vt100) the
       command to set this can be described with  the  csr  capability,	 which
       takes two parameters: the top and bottom	lines of the scrolling region.
       The cursor position is, alas, undefined after using this	command.

       It is possible to get the effect	of insert or delete line using csr  on
       a  properly chosen region; the sc and rc	(save and restore cursor) com-
       mands may be useful for ensuring	that  your  synthesized	 insert/delete
       string  does  not  move the cursor.  (Note that the ncurses(3X) library
       does  this  synthesis  automatically,  so  you  need  not  compose  in-
       sert/delete strings for an entry	with csr).

       Yet another way to construct insert and delete might be to use a	combi-
       nation of index with the	memory-lock feature found  on  some  terminals
       (like the HP-700/90 series, which however also has insert/delete).

       Inserting lines at the top or bottom of the screen can also be done us-
       ing ri or ind on	many terminals without a true insert/delete line,  and
       is often	faster even on terminals with those features.

       The boolean non_dest_scroll_region should be set	if each	scrolling win-
       dow is effectively a view port on a screen-sized	canvas.	 To  test  for
       this capability,	create a scrolling region in the middle	of the screen,
       write something to the bottom line, move	the cursor to the top  of  the
       region, and do ri followed by dl1 or ind.  If the data scrolled off the
       bottom of the region by the ri re-appears, then	scrolling  is  non-de-
       structive.   System V and XSI Curses expect that	ind, ri, indn, and rin
       will simulate destructive scrolling; their documentation	 cautions  you
       not  to	define csr unless this is true.	 This curses implementation is
       more liberal and	will do	explicit erases	after scrolling	 if  ndsrc  is

       If  the	terminal has the ability to define a window as part of memory,
       which all commands affect, it should  be	 given	as  the	 parameterized
       string  wind.  The four parameters are the starting and ending lines in
       memory and the starting and ending columns in memory, in	that order.

       If the terminal can retain display memory above,	then the da capability
       should  be  given;  if  display	memory	can be retained	below, then db
       should be given.	 These indicate	that deleting a	line or	scrolling  may
       bring  non-blank	lines up from below or that scrolling back with	ri may
       bring down non-blank lines.

   Insert/Delete Character
       There are two basic kinds of intelligent	terminals with respect to  in-
       sert/delete  character which can	be described using terminfo.  The most
       common insert/delete character operations affect	only the characters on
       the  current line and shift characters off the end of the line rigidly.
       Other terminals,	such as	the Concept 100	and the	Perkin Elmer Owl, make
       a  distinction between typed and	untyped	blanks on the screen, shifting
       upon an insert or delete	only to	an untyped blank on the	 screen	 which
       is either eliminated, or	expanded to two	untyped	blanks.

       You  can	determine the kind of terminal you have	by clearing the	screen
       and then	typing text separated by cursor	 motions.   Type  "abc	  def"
       using  local  cursor  motions  (not  spaces)  between the "abc" and the
       "def".  Then position the cursor	before the "abc" and put the  terminal
       in  insert  mode.   If typing characters	causes the rest	of the line to
       shift rigidly and characters to fall off	the end,  then	your  terminal
       does  not  distinguish  between	blanks	and untyped positions.	If the
       "abc" shifts over to the	"def" which then move together around the  end
       of  the current line and	onto the next as you insert, you have the sec-
       ond type	of terminal, and should	give the capability in,	 which	stands
       for "insert null".

       While  these  are  two  logically  separate attributes (one line	versus
       multi-line insert mode, and special treatment  of  untyped  spaces)  we
       have  seen  no terminals	whose insert mode cannot be described with the
       single attribute.

       Terminfo	can describe both terminals which have	an  insert  mode,  and
       terminals  which	send a simple sequence to open a blank position	on the
       current line.  Give as smir the sequence	to get into insert mode.  Give
       as  rmir	 the  sequence to leave	insert mode.  Now give as ich1 any se-
       quence needed to	be sent	just before sending the	character  to  be  in-
       serted.	 Most  terminals  with	a true insert mode will	not give ich1;
       terminals which send a sequence to open a screen	position  should  give
       it here.

       If  your	 terminal has both, insert mode	is usually preferable to ich1.
       Technically, you	should not give	both unless the	terminal actually  re-
       quires  both  to	 be used in combination.  Accordingly, some non-curses
       applications get	confused if both are present; the symptom  is  doubled
       characters  in  an  update using	insert.	 This requirement is now rare;
       most ich	sequences do not require previous smir,	and most  smir	insert
       modes  do  not  require ich1 before each	character.  Therefore, the new
       curses actually assumes this is the case	and uses either	 rmir/smir  or
       ich/ich1	 as appropriate	(but not both).	 If you	have to	write an entry
       to be used under	new curses for a terminal old enough to	need both, in-
       clude the rmir/smir sequences in	ich1.

       If post insert padding is needed, give this as a	number of milliseconds
       in ip (a	string option).	 Any other sequence which may need to be  sent
       after an	insert of a single character may also be given in ip.  If your
       terminal	needs both to be placed	into an	"insert	mode"  and  a  special
       code  to	 precede each inserted character, then both smir/rmir and ich1
       can be given, and both will be used.  The ich capability, with one  pa-
       rameter,	n, will	repeat the effects of ich1 n times.

       If  padding  is	necessary between characters typed while not in	insert
       mode, give this as a number of milliseconds padding in rmp.

       It is occasionally necessary to move around while  in  insert  mode  to
       delete  characters  on the same line (e.g., if there is a tab after the
       insertion position).  If	your terminal allows motion  while  in	insert
       mode  you  can  give  the  capability mir to speed up inserting in this
       case.  Omitting mir will	affect only speed.   Some  terminals  (notably
       Datamedia's)  must  not	have  mir because of the way their insert mode

       Finally,	you can	specify	dch1 to	delete a single	 character,  dch  with
       one  parameter,	n,  to	delete n characters, and delete	mode by	giving
       smdc and	rmdc to	enter and exit delete  mode  (any  mode	 the  terminal
       needs to	be placed in for dch1 to work).

       A  command  to  erase  n	 characters (equivalent	to outputting n	blanks
       without moving the cursor) can be given as ech with one parameter.

   Highlighting, Underlining, and Visible Bells
       If your terminal	has one	or more	kinds of display attributes, these can
       be  represented	in  a number of	different ways.	 You should choose one
       display form as standout	mode,  representing  a	good,  high  contrast,
       easy-on-the-eyes,  format for highlighting error	messages and other at-
       tention getters.	 (If you have a	choice,	reverse	video plus half-bright
       is  good,  or  reverse  video  alone.)  The sequences to	enter and exit
       standout	mode are given as smso and rmso, respectively.	If the code to
       change into or out of standout mode leaves one or even two blank	spaces
       on the screen, as the TVI 912 and Teleray 1061 do, then xmc  should  be
       given to	tell how many spaces are left.

       Codes to	begin underlining and end underlining can be given as smul and
       rmul respectively.  If the terminal has a code to underline the current
       character  and  move the	cursor one space to the	right, such as the Mi-
       croterm Mime, this can be given as uc.

       Other capabilities to enter various highlighting	 modes	include	 blink
       (blinking)  bold	 (bold or extra	bright)	dim (dim or half-bright) invis
       (blanking or invisible text) prot (protected) rev (reverse video)  sgr0
       (turn  off  all	attribute  modes) smacs	(enter alternate character set
       mode) and rmacs (exit alternate character set mode).  Turning on	any of
       these modes singly may or may not turn off other	modes.

       If  there  is  a	 sequence to set arbitrary combinations	of modes, this
       should be given as sgr (set attributes),	taking 9 parameters.  Each pa-
       rameter is either 0 or nonzero, as the corresponding attribute is on or
       off.  The 9 parameters are, in  order:  standout,  underline,  reverse,
       blink,  dim,  bold,  blank,  protect, alternate character set.  Not all
       modes need be supported by sgr, only those for which corresponding sep-
       arate attribute commands	exist.

       For example, the	DEC vt220 supports most	of the modes:

	       tparm parameter	    attribute	     escape sequence

	       none		    none	     \E[0m
	       p1		    standout	     \E[0;1;7m
	       p2		    underline	     \E[0;4m
	       p3		    reverse	     \E[0;7m
	       p4		    blink	     \E[0;5m
	       p5		    dim		     not available
	       p6		    bold	     \E[0;1m
	       p7		    invis	     \E[0;8m
	       p8		    protect	     not used
	       p9		    altcharset	     ^O	(off) ^N (on)

       We  begin each escape sequence by turning off any existing modes, since
       there is	no quick way to	determine whether they are  active.   Standout
       is  set up to be	the combination	of reverse and bold.  The vt220	termi-
       nal has a protect mode, though it is not	commonly used in  sgr  because
       it  protects  characters	 on  the screen	from the host's	erasures.  The
       altcharset mode also is different in that it is either ^O  or  ^N,  de-
       pending	on  whether  it	is off or on.  If all modes are	turned on, the
       resulting sequence is \E[0;1;4;5;7;8m^N.

       Some sequences are common to different modes.  For example, ;7 is  out-
       put  when  either  p1 or	p3 is true, that is, if	either standout	or re-
       verse modes are turned on.

       Writing out the above sequences,	along with their dependencies yields

	    sequence		 when to output	     terminfo translation

	    \E[0		 always		     \E[0
	    ;1			 if p1 or p6	     %?%p1%p6%|%t;1%;
	    ;4			 if p2		     %?%p2%|%t;4%;
	    ;5			 if p4		     %?%p4%|%t;5%;
	    ;7			 if p1 or p3	     %?%p1%p3%|%t;7%;
	    ;8			 if p7		     %?%p7%|%t;8%;
	    m			 always		     m
	    ^N or ^O		 if p9 ^N, else	^O   %?%p9%t^N%e^O%;

       Putting this all	together into the sgr sequence gives:


       Remember	that if	you specify sgr, you must also	specify	 sgr0.	 Also,
       some  implementations  rely on sgr being	given if sgr0 is, Not all ter-
       minfo entries necessarily have an sgr string, however.	Many  terminfo
       entries are derived from	termcap	entries	which have no sgr string.  The
       only drawback to	adding an sgr string is	that termcap also assumes that
       sgr0 does not exit alternate character set mode.

       Terminals  with	the "magic cookie" glitch (xmc)	deposit	special	"cook-
       ies" when they receive mode-setting sequences, which affect the display
       algorithm  rather than having extra bits	for each character.  Some ter-
       minals, such as the HP 2621, automatically  leave  standout  mode  when
       they  move  to  a  new line or the cursor is addressed.	Programs using
       standout	mode should exit standout mode before  moving  the  cursor  or
       sending	a  newline,  unless  the msgr capability, asserting that it is
       safe to move in standout	mode, is present.

       If the terminal has a way of flashing the screen	to indicate  an	 error
       quietly	(a  bell replacement) then this	can be given as	flash; it must
       not move	the cursor.

       If the cursor needs to be made more visible than	normal when it is  not
       on the bottom line (to make, for	example, a non-blinking	underline into
       an easier to find block or blinking underline) give  this  sequence  as
       cvvis.  If there	is a way to make the cursor completely invisible, give
       that as civis.  The capability cnorm should be given which  undoes  the
       effects of both of these	modes.

       If  your	 terminal  correctly  generates	underlined characters (with no
       special codes needed) even though it  does  not	overstrike,  then  you
       should  give  the  capability  ul.  If a	character overstriking another
       leaves both characters on the screen, specify the  capability  os.   If
       overstrikes are erasable	with a blank, then this	should be indicated by
       giving eo.

   Keypad and Function Keys
       If the terminal has a keypad that transmits codes  when	the  keys  are
       pressed,	 this  information can be given.  Note that it is not possible
       to handle terminals where the keypad only works in local	(this applies,
       for  example, to	the unshifted HP 2621 keys).  If the keypad can	be set
       to transmit or not transmit, give these codes as	smkx and rmkx.	Other-
       wise the	keypad is assumed to always transmit.

       The  codes  sent	 by the	left arrow, right arrow, up arrow, down	arrow,
       and home	keys can be given as kcub1, kcuf1, kcuu1, kcud1, and khome re-
       spectively.   If	 there are function keys such as f0, f1, ..., f10, the
       codes they send can be given as kf0, kf1, ...,  kf10.   If  these  keys
       have  labels  other  than the default f0	through	f10, the labels	can be
       given as	lf0, lf1, ..., lf10.

       The codes transmitted by	certain	other special keys can be given:

       o   kll (home down),

       o   kbs (backspace),

       o   ktbc	(clear all tabs),

       o   kctab (clear	the tab	stop in	this column),

       o   kclr	(clear screen or erase key),

       o   kdch1 (delete character),

       o   kdl1	(delete	line),

       o   krmir (exit insert mode),

       o   kel (clear to end of	line),

       o   ked (clear to end of	screen),

       o   kich1 (insert character or enter insert mode),

       o   kil1	(insert	line),

       o   knp (next page),

       o   kpp (previous page),

       o   kind	(scroll	forward/down),

       o   kri (scroll backward/up),

       o   khts	(set a tab stop	in this	column).

       In addition, if the keypad has a	3 by 3 array  of  keys	including  the
       four  arrow  keys,  the	other five keys	can be given as	ka1, ka3, kb2,
       kc1, and	kc3.  These keys are useful when the effects of	a 3 by	3  di-
       rectional pad are needed.

       Strings to program function keys	can be given as	pfkey, pfloc, and pfx.
       A string	to program screen labels should	be specified as	pln.  Each  of
       these  strings takes two	parameters: the	function key number to program
       (from 0 to 10) and the string to	program	it with.  Function key numbers
       out  of	this  range may	program	undefined keys in a terminal dependent
       manner.	The difference between the capabilities	is that	 pfkey	causes
       pressing	 the  given  key  to  be the same as the user typing the given
       string; pfloc causes the	string to be executed by the terminal  in  lo-
       cal; and	pfx causes the string to be transmitted	to the computer.

       The  capabilities  nlab,	 lw  and  lh define the	number of programmable
       screen labels and their width and height.  If  there  are  commands  to
       turn  the  labels on and	off, give them in smln and rmln.  smln is nor-
       mally output after one or more pln sequences  to	 make  sure  that  the
       change becomes visible.

   Tabs	and Initialization
       A few capabilities are used only	for tabs:

       o   If  the  terminal  has hardware tabs, the command to	advance	to the
	   next	tab stop can be	given as ht (usually control/I).

       o   A "back-tab"	command	which moves leftward to	the preceding tab stop
	   can be given	as cbt.

	   By  convention,  if the teletype modes indicate that	tabs are being
	   expanded by the computer rather than	being sent  to	the  terminal,
	   programs  should  not use ht	or cbt even if they are	present, since
	   the user may	not have the tab stops properly	set.

       o   If the terminal has hardware	tabs which are initially set  every  n
	   spaces when the terminal is powered up, the numeric parameter it is
	   given, showing the number of	spaces the tabs	are set	to.

	   The it capability is	normally used by the @TSET@ command to	deter-
	   mine	 whether  to  set  the	mode  for  hardware tab	expansion, and
	   whether to set the tab stops.  If the terminal has tab  stops  that
	   can	be  saved in non-volatile memory, the terminfo description can
	   assume that they are	properly set.

       Other capabilities include

       o   is1,	is2, and is3, initialization strings for the terminal,

       o   iprog, the path name	of a program to	be run to initialize the  ter-

       o   and if, the name of a file containing long initialization strings.

       These  strings  are  expected to	set the	terminal into modes consistent
       with the	rest of	the terminfo description.  They	are normally  sent  to
       the  terminal,  by the init option of the @TPUT@	program, each time the
       user logs in.  They will	be printed in the following order:

	      run the program

		     is1 and

	      set the margins using
		     mgc or
		     smglp and smgrp or
		     smgl and smgr

	      set tabs using
		     tbc and hts

	      print the	file

	      and finally output

       Most initialization is done with	is2.  Special terminal	modes  can  be
       set  up	without	duplicating strings by putting the common sequences in
       is2 and special cases in	is1 and	is3.

       A set of	sequences that does a harder  reset  from  a  totally  unknown
       state can be given as rs1, rs2, rf and rs3, analogous to	is1 , is2 , if
       and is3 respectively.  These strings are	 output	 by  reset  option  of
       @TPUT@,	or  by the @RESET@ program (an alias of	@TSET@), which is used
       when the	terminal gets into a  wedged  state.   Commands	 are  normally
       placed  in rs1, rs2 rs3 and rf only if they produce annoying effects on
       the screen and are not necessary	when logging  in.   For	 example,  the
       command	to set the vt100 into 80-column	mode would normally be part of
       is2, but	it causes an annoying glitch of	the screen and is not normally
       needed since the	terminal is usually already in 80-column mode.

       The  @RESET@  program writes strings including iprog, etc., in the same
       order as	the init program, using	rs1, etc., instead of  is1,  etc.   If
       any  of	rs1, rs2, rs3, or rf reset capability strings are missing, the
       @RESET@ program falls back upon the corresponding initialization	 capa-
       bility string.

       If  there are commands to set and clear tab stops, they can be given as
       tbc (clear all tab stops) and hts (set a	tab stop in the	current	column
       of  every  row).	  If a more complex sequence is	needed to set the tabs
       than can	be described by	this, the sequence can be placed in is2	or if.

       The @TPUT@ reset	command	uses the same capability strings as  the  @RE-
       SET@  command,  although	 the two programs (@TPUT@ and @RESET@) provide
       different command-line options.

       In practice, these terminfo capabilities	are not	often used in initial-
       ization of tabs (though they are	required for the @TABS@	program):

       o   Almost all hardware terminals (at least those which supported tabs)
	   initialized those to	every eight columns:

	   The only exception was the AT&T 2300	series,	which set tabs to  ev-
	   ery five columns.

       o   In  particular, developers of the hardware terminals	which are com-
	   monly used as models	for modern terminal emulators  provided	 docu-
	   mentation demonstrating that	eight columns were the standard.

       o   Because  of	this,  the terminal initialization programs @TPUT@ and
	   @TSET@ use the tbc (clear_all_tabs) and hts (set_tab)  capabilities
	   directly  only when the it (init_tabs) capability is	set to a value
	   other than eight.

   Delays and Padding
       Many older and slower terminals do not support either XON/XOFF  or  DTR
       handshaking,  including	hard copy terminals and	some very archaic CRTs
       (including, for example,	DEC VT100s).  These may	require	padding	 char-
       acters after certain cursor motions and screen changes.

       If the terminal uses xon/xoff handshaking for flow control (that	is, it
       automatically emits ^S back to the host	when  its  input  buffers  are
       close  to  full),  set xon.  This capability suppresses the emission of
       padding.	 You can also set it for memory-mapped console devices	effec-
       tively  that  do	 not  have  a speed limit.  Padding information	should
       still be	included so that routines can make better decisions about rel-
       ative costs, but	actual pad characters will not be transmitted.

       If pb (padding baud rate) is given, padding is suppressed at baud rates
       below the value of pb.  If the entry has	no  padding  baud  rate,  then
       whether padding is emitted or not is completely controlled by xon.

       If  the	terminal requires other	than a null (zero) character as	a pad,
       then this can be	given as pad.  Only the	first  character  of  the  pad
       string is used.

   Status Lines
       Some  terminals	have an	extra "status line" which is not normally used
       by software (and	thus not counted in the	terminal's lines capability).

       The simplest case is a status line which	is cursor-addressable but  not
       part of the main	scrolling region on the	screen;	the Heathkit H19 has a
       status line of this kind, as would  a  24-line  VT100  with  a  23-line
       scrolling region	set up on initialization.  This	situation is indicated
       by the hs capability.

       Some terminals with status lines	need special sequences to  access  the
       status  line.  These may	be expressed as	a string with single parameter
       tsl which takes the cursor to a given zero-origin column	on the	status
       line.   The  capability fsl must	return to the main-screen cursor posi-
       tions before the	last tsl.  You may need	to embed the string values  of
       sc  (save  cursor) and rc (restore cursor) in tsl and fsl to accomplish

       The status line is normally assumed to be the same width	as  the	 width
       of  the	terminal.   If this is untrue, you can specify it with the nu-
       meric capability	wsl.

       A command to erase or blank the status line may be specified as dsl.

       The boolean capability eslok specifies  that  escape  sequences,	 tabs,
       etc., work ordinarily in	the status line.

       The  ncurses implementation does	not yet	use any	of these capabilities.
       They are	documented here	in case	they ever become important.

   Line	Graphics
       Many terminals have alternate character sets useful for	forms-drawing.
       Terminfo	and curses have	built-in support for most of the drawing char-
       acters supported	by the VT100,  with  some  characters  from  the  AT&T
       4410v1  added.	This  alternate	 character set may be specified	by the
       acsc capability.

	 Glyph			     ACS	    Ascii     acsc     acsc
	 Name			     Name	    Default   Char     Value
	 arrow pointing	right	     ACS_RARROW	    >	      +	       0x2b
	 arrow pointing	left	     ACS_LARROW	    <	      ,	       0x2c
	 arrow pointing	up	     ACS_UARROW	    ^	      -	       0x2d
	 arrow pointing	down	     ACS_DARROW	    v	      .	       0x2e
	 solid square block	     ACS_BLOCK	    #	      0	       0x30
	 diamond		     ACS_DIAMOND    +	      `	       0x60
	 checker board (stipple)     ACS_CKBOARD    :	      a	       0x61
	 degree	symbol		     ACS_DEGREE	    \	      f	       0x66
	 plus/minus		     ACS_PLMINUS    #	      g	       0x67
	 board of squares	     ACS_BOARD	    #	      h	       0x68
	 lantern symbol		     ACS_LANTERN    #	      i	       0x69
	 lower right corner	     ACS_LRCORNER   +	      j	       0x6a
	 upper right corner	     ACS_URCORNER   +	      k	       0x6b
	 upper left corner	     ACS_ULCORNER   +	      l	       0x6c
	 lower left corner	     ACS_LLCORNER   +	      m	       0x6d
	 large plus or crossover     ACS_PLUS	    +	      n	       0x6e
	 scan line 1		     ACS_S1	    ~	      o	       0x6f
	 scan line 3		     ACS_S3	    -	      p	       0x70
	 horizontal line	     ACS_HLINE	    -	      q	       0x71
	 scan line 7		     ACS_S7	    -	      r	       0x72
	 scan line 9		     ACS_S9	    _	      s	       0x73
	 tee pointing right	     ACS_LTEE	    +	      t	       0x74
	 tee pointing left	     ACS_RTEE	    +	      u	       0x75
	 tee pointing up	     ACS_BTEE	    +	      v	       0x76
	 tee pointing down	     ACS_TTEE	    +	      w	       0x77
	 vertical line		     ACS_VLINE	    |	      x	       0x78
	 less-than-or-equal-to	     ACS_LEQUAL	    <	      y	       0x79
	 greater-than-or-equal-to    ACS_GEQUAL	    >	      z	       0x7a
	 greek pi		     ACS_PI	    *	      {	       0x7b
	 not-equal		     ACS_NEQUAL	    !	      |	       0x7c
	 UK pound sign		     ACS_STERLING   f	      }	       0x7d
	 bullet			     ACS_BULLET	    o	      ~	       0x7e

       A few notes apply to the	table itself:

       o   X/Open Curses incorrectly states that the mapping  for  lantern  is
	   uppercase  "I"  although Unix implementations use the lowercase "i"

       o   The DEC VT100 implemented graphics using  the  alternate  character
	   set	feature, temporarily switching modes and sending characters in
	   the range 0x60 (96) to 0x7e (126) (the acsc Value column in the ta-

       o   The AT&T terminal added graphics characters outside that range.

	   Some	 of  the  characters  within the range do not match the	VT100;
	   presumably they were	used in	the AT&T terminal:  board  of  squares
	   replaces  the  VT100	 newline symbol, while lantern symbol replaces
	   the VT100 vertical tab symbol.  The other VT100 symbols for control
	   characters  (horizontal tab,	carriage return	and line-feed) are not
	   (re)used in curses.

       The best	way to define a	new device's graphics set is to	add  a	column
       to  a  copy of this table for your terminal, giving the character which
       (when emitted between smacs/rmacs switches) will	 be  rendered  as  the
       corresponding graphic.  Then read off the VT100/your terminal character
       pairs right to left in sequence;	these become the ACSC string.

   Color Handling
       The curses library functions init_pair and  init_color  manipulate  the
       color   pairs   and   color  values  discussed  in  this	 section  (see
       curs_color(3X) for details on these and related functions).

       Most color terminals are	either "Tektronix-like"	or "HP-like":

       o   Tektronix-like terminals have a predefined set of N colors (where N
	   is usually 8), and can set character-cell foreground	and background
	   characters independently, mixing them into N	* N color-pairs.

       o   On HP-like terminals, the user must set each	color  pair  up	 sepa-
	   rately  (foreground and background are not independently settable).
	   Up to M color-pairs may be set up from 2*M different	colors.	 ANSI-
	   compatible terminals	are Tektronix-like.

       Some basic color	capabilities are independent of	the color method.  The
       numeric capabilities colors and pairs specify the  maximum  numbers  of
       colors  and  color-pairs	 that can be displayed simultaneously.	The op
       (original pair) string resets foreground	and background colors to their
       default	values	for  the terminal.  The	oc string resets all colors or
       color-pairs to their default values for the terminal.   Some  terminals
       (including many PC terminal emulators) erase screen areas with the cur-
       rent background color rather  than  the	power-up  default  background;
       these should have the boolean capability	bce.

       While the curses	library	works with color pairs (reflecting the inabil-
       ity of some devices to set foreground and  background  colors  indepen-
       dently),	there are separate capabilities	for setting these features:

       o   To  change  the  current  foreground	 or background color on	a Tek-
	   tronix-type terminal, use setaf (set	 ANSI  foreground)  and	 setab
	   (set	 ANSI background) or setf (set foreground) and setb (set back-
	   ground).  These take	one parameter, the  color  number.   The  SVr4
	   documentation  describes only setaf/setab; the XPG4 draft says that
	   "If the terminal supports ANSI escape sequences to  set  background
	   and	foreground,  they  should be coded as setaf and	setab, respec-

       o   If the terminal supports other escape sequences to  set  background
	   and	foreground,  they  should  be  coded as	setf and setb, respec-
	   tively.  The	vidputs	and the	refresh(3X) functions  use  the	 setaf
	   and setab capabilities if they are defined.

       The  setaf/setab	and setf/setb capabilities take	a single numeric argu-
       ment each.  Argument values 0-7 of setaf/setab are portably defined  as
       follows	(the  middle  column  is the symbolic #define available	in the
       header for the curses or	ncurses	libraries).  The terminal hardware  is
       free to map these as it likes, but the RGB values indicate normal loca-
       tions in	color space.

		    Color	#define	      Value	  RGB
		    black     COLOR_BLACK	0     0, 0, 0
		    red	      COLOR_RED		1     max,0,0
		    green     COLOR_GREEN	2     0,max,0
		    yellow    COLOR_YELLOW	3     max,max,0
		    blue      COLOR_BLUE	4     0,0,max
		    magenta   COLOR_MAGENTA	5     max,0,max
		    cyan      COLOR_CYAN	6     0,max,max
		    white     COLOR_WHITE	7     max,max,max

       The argument values of setf/setb	historically correspond	to a different
       mapping,	i.e.,

		    Color	#define	      Value	  RGB
		    black     COLOR_BLACK	0     0, 0, 0
		    blue      COLOR_BLUE	1     0,0,max
		    green     COLOR_GREEN	2     0,max,0
		    cyan      COLOR_CYAN	3     0,max,max
		    red	      COLOR_RED		4     max,0,0
		    magenta   COLOR_MAGENTA	5     max,0,max
		    yellow    COLOR_YELLOW	6     max,max,0
		    white     COLOR_WHITE	7     max,max,max

       It is important to not confuse the two sets of color capabilities; oth-
       erwise red/blue will be interchanged on the display.

       On an HP-like terminal, use scp with a color-pair number	 parameter  to
       set which color pair is current.

       Some terminals allow the	color values to	be modified:

       o   On  a Tektronix-like	terminal, the capability ccc may be present to
	   indicate that colors	can be modified.  If so, the initc  capability
	   will	take a color number (0 to colors - 1)and three more parameters
	   which describe the color.  These three parameters default to	 being
	   interpreted as RGB (Red, Green, Blue) values.  If the boolean capa-
	   bility hls is present, they are instead  as	HLS  (Hue,  Lightness,
	   Saturation) indices.	 The ranges are	terminal-dependent.

       o   On  an HP-like terminal, initp may give a capability	for changing a
	   color-pair value.  It will take seven parameters; a color-pair num-
	   ber	(0  to	max_pairs - 1),	and two	triples	describing first back-
	   ground and then foreground colors.  These parameters	must be	 (Red,
	   Green, Blue)	or (Hue, Lightness, Saturation)	depending on hls.

       On  some	color terminals, colors	collide	with highlights.  You can reg-
       ister these collisions with the ncv capability.	This is	a bit-mask  of
       attributes  not to be used when colors are enabled.  The	correspondence
       with the	attributes understood by curses	is as follows:

		  Attribute		 Bit   Decimal	    Set	by
		  A_STANDOUT		 0     1	    sgr
		  A_UNDERLINE		 1     2	    sgr
		  A_REVERSE		 2     4	    sgr
		  A_BLINK		 3     8	    sgr
		  A_DIM			 4     16	    sgr
		  A_BOLD		 5     32	    sgr
		  A_INVIS		 6     64	    sgr
		  A_PROTECT		 7     128	    sgr
		  A_ALTCHARSET		 8     256	    sgr

		  A_HORIZONTAL		 9     512	    sgr1
		  A_LEFT		 10    1024	    sgr1
		  A_LOW			 11    2048	    sgr1
		  A_RIGHT		 12    4096	    sgr1
		  A_TOP			 13    8192	    sgr1
		  A_VERTICAL		 14    16384	    sgr1
		  A_ITALIC		 15    32768	    sitm

       For example, on many IBM	PC consoles, the underline attribute  collides
       with  the  foreground  color  blue  and is not available	in color mode.
       These should have an ncv	capability of 2.

       SVr4 curses does	nothing	with ncv, ncurses recognizes it	and  optimizes
       the output in favor of colors.

       If  the	terminal requires other	than a null (zero) character as	a pad,
       then this can be	given as pad.  Only the	first  character  of  the  pad
       string is used.	If the terminal	does not have a	pad character, specify
       npc.  Note that ncurses implements the termcap-compatible PC  variable;
       though  the  application	 may  set this value to	something other	than a
       null, ncurses will test npc first and use napms if the terminal has  no
       pad character.

       If  the terminal	can move up or down half a line, this can be indicated
       with hu (half-line up) and hd (half-line	down).	This is	primarily use-
       ful for superscripts and	subscripts on hard-copy	terminals.  If a hard-
       copy terminal can eject to the next page	(form feed), give this	as  ff
       (usually	control/L).

       If  there  is  a	 command to repeat a given character a given number of
       times (to save time transmitting	a large	number	of  identical  charac-
       ters)  this  can	 be  indicated with the	parameterized string rep.  The
       first parameter is the character	to be repeated and the second  is  the
       number of times to repeat it.  Thus, tparm(repeat_char, 'x', 10)	is the
       same as "xxxxxxxxxx".

       If the terminal has a settable command character, such as the TEKTRONIX
       4025,  this can be indicated with cmdch.	 A prototype command character
       is chosen which is used in all capabilities.  This character  is	 given
       in  the	cmdch  capability to identify it.  The following convention is
       supported on some UNIX systems: The environment is to be	searched for a
       CC  variable,  and if found, all	occurrences of the prototype character
       are replaced with the character in the environment variable.

       Terminal	descriptions that do not represent a specific  kind  of	 known
       terminal,  such	as  switch, dialup, patch, and network,	should include
       the gn (generic)	capability so that programs can	complain that they  do
       not  know how to	talk to	the terminal.  (This capability	does not apply
       to virtual terminal descriptions	for which  the	escape	sequences  are

       If the terminal has a "meta key"	which acts as a	shift key, setting the
       8th bit of any character	transmitted, this fact can be  indicated  with
       km.   Otherwise,	software will assume that the 8th bit is parity	and it
       will usually be cleared.	 If strings exist to turn this "meta mode"  on
       and off,	they can be given as smm and rmm.

       If the terminal has more	lines of memory	than will fit on the screen at
       once, the number	of lines of memory can be indicated with lm.  A	 value
       of lm#0 indicates that the number of lines is not fixed,	but that there
       is still	more memory than fits on the screen.

       If the terminal is one of those supported by the	UNIX virtual  terminal
       protocol, the terminal number can be given as vt.

       Media  copy strings which control an auxiliary printer connected	to the
       terminal	can be given as	mc0: print the contents	of  the	 screen,  mc4:
       turn  off  the printer, and mc5:	turn on	the printer.  When the printer
       is on, all text sent to the terminal will be sent to the	 printer.   It
       is  undefined whether the text is also displayed	on the terminal	screen
       when the	printer	is on.	A variation  mc5p  takes  one  parameter,  and
       leaves the printer on for as many characters as the value of the	param-
       eter, then turns	the printer off.  The parameter	should not exceed 255.
       All  text,  including mc4, is transparently passed to the printer while
       an mc5p is in effect.

   Glitches and	Braindamage
       Hazeltine terminals, which do not allow "~" characters to be  displayed
       should indicate hz.

       Terminals  which	 ignore	a line-feed immediately	after an am wrap, such
       as the Concept and vt100, should	indicate xenl.

       If el is	required to get	rid of standout	 (instead  of  merely  writing
       normal text on top of it), xhp should be	given.

       Teleray terminals, where	tabs turn all characters moved over to blanks,
       should indicate xt (destructive tabs).  Note: the  variable  indicating
       this  is	 now  "dest_tabs_magic_smso";  in  older versions, it was tel-
       eray_glitch.  This glitch is also taken to mean that it is not possible
       to position the cursor on top of	a "magic cookie", that to erase	stand-
       out mode	it is instead necessary	to use delete and  insert  line.   The
       ncurses implementation ignores this glitch.

       The  Beehive Superbee, which is unable to correctly transmit the	escape
       or control/C characters,	has xsb, indicating that the f1	 key  is  used
       for  escape  and	 f2  for control/C.  (Only certain Superbees have this
       problem,	depending on the ROM.)	Note that in older terminfo  versions,
       this capability was called "beehive_glitch"; it is now "no_esc_ctl_c".

       Other  specific terminal	problems may be	corrected by adding more capa-
       bilities	of the form xx.

   Pitfalls of Long Entries
       Long terminfo entries are unlikely to be	a problem; to date,  no	 entry
       has  even approached terminfo's 4096-byte string-table maximum.	Unfor-
       tunately, the termcap translations are much more	strictly  limited  (to
       1023  bytes),  thus  termcap  translations of long terminfo entries can
       cause problems.

       The man pages for 4.3BSD	and older versions  of	tgetent	 instruct  the
       user  to	 allocate a 1024-byte buffer for the termcap entry.  The entry
       gets null-terminated by the termcap library, so that makes the  maximum
       safe  length  for a termcap entry 1k-1 (1023) bytes.  Depending on what
       the application and the termcap library being used does,	and  where  in
       the  termcap  file  the terminal	type that tgetent is searching for is,
       several bad things can happen.

       Some termcap libraries print a warning message or exit if they find  an
       entry that's longer than	1023 bytes; others do not; others truncate the
       entries to 1023 bytes.  Some application	programs  allocate  more  than
       the recommended 1K for the termcap entry; others	do not.

       Each  termcap  entry has	two important sizes associated with it:	before
       "tc" expansion, and after "tc" expansion.  "tc" is the capability  that
       tacks on	another	termcap	entry to the end of the	current	one, to	add on
       its capabilities.  If a termcap entry does not use the "tc" capability,
       then of course the two lengths are the same.

       The  "before tc expansion" length is the	most important one, because it
       affects more than just users of that particular terminal.  This is  the
       length  of the entry as it exists in /etc/termcap, minus	the backslash-
       newline pairs, which tgetent strips out while reading it.  Some termcap
       libraries strip off the final newline, too (GNU termcap does not).  Now

       o   a termcap entry before expansion is more than 1023 bytes long,

       o   and the application has only	allocated a 1k buffer,

       o   and the termcap library (like the one in BSD/OS 1.1 and GNU)	 reads
	   the	whole entry into the buffer, no	matter what its	length,	to see
	   if it is the	entry it wants,

       o   and tgetent is searching for	a terminal type	 that  either  is  the
	   long	 entry,	 appears  in the termcap file after the	long entry, or
	   does	not appear in the file at all (so that tgetent has  to	search
	   the whole termcap file).

       Then  tgetent  will  overwrite  memory, perhaps its stack, and probably
       core dump the program.  Programs	like telnet are	particularly  vulnera-
       ble;  modern telnets pass along values like the terminal	type automati-
       cally.  The results are almost as undesirable with a  termcap  library,
       like  SunOS  4.1.3 and Ultrix 4.4, that prints warning messages when it
       reads an	overly long termcap entry.  If	a  termcap  library  truncates
       long  entries,  like OSF/1 3.0, it is immune to dying here but will re-
       turn incorrect data for the terminal.

       The "after tc expansion"	length will  have  a  similar  effect  to  the
       above, but only for people who actually set TERM	to that	terminal type,
       since tgetent only does "tc" expansion once it is  found	 the  terminal
       type it was looking for,	not while searching.

       In  summary,  a termcap entry that is longer than 1023 bytes can	cause,
       on various combinations of termcap libraries and	applications,  a  core
       dump,  warnings,	or incorrect operation.	 If it is too long even	before
       "tc" expansion, it will have this effect	even for users of  some	 other
       terminal	 types	and  users whose TERM variable does not	have a termcap

       When in -C (translate to	termcap) mode, the ncurses  implementation  of
       tic(1M)	issues	warning	 messages  when	the pre-tc length of a termcap
       translation is too long.	 The -c	(check)	option	also  checks  resolved
       (after tc expansion) lengths.

   Binary Compatibility
       It  is  not wise	to count on portability	of binary terminfo entries be-
       tween commercial	UNIX versions.	The problem is that there are at least
       two versions of terminfo	(under HP-UX and AIX) which diverged from Sys-
       tem V terminfo after SVr1, and have added extension capabilities	to the
       string  table that (in the binary format) collide with System V and XSI
       Curses extensions.

       Searching  for  terminal	 descriptions  in  $HOME/.terminfo  and	  TER-
       MINFO_DIRS is not supported by older implementations.

       Some  SVr4 curses implementations, and all previous to SVr4, do not in-
       terpret the %A and %O operators in parameter strings.

       SVr4/XPG4 do not	specify	whether	msgr licenses movement while in	an al-
       ternate-character-set  mode (such modes may, among other	things,	map CR
       and NL to characters that do not	trigger	local motions).	  The  ncurses
       implementation ignores msgr in ALTCHARSET mode.	This raises the	possi-
       bility that an XPG4 implementation making the  opposite	interpretation
       may need	terminfo entries made for ncurses to have msgr turned off.

       The ncurses library handles insert-character and	insert-character modes
       in a slightly non-standard way to get better  update  efficiency.   See
       the Insert/Delete Character subsection above.

       The  parameter  substitutions  for  set_clock and display_clock are not
       documented in SVr4 or the XSI Curses standard.  They are	 deduced  from
       the documentation for the AT&T 505 terminal.

       Be  careful  assigning the kmous	capability.  The ncurses library wants
       to interpret it as KEY_MOUSE, for use by	terminals and  emulators  like
       xterm  that can return mouse-tracking information in the	keyboard-input

       X/Open Curses does not mention italics.	Portable applications must as-
       sume that numeric capabilities are signed 16-bit	values.	 This includes
       the no_color_video (ncv)	capability.  The 32768	mask  value  used  for
       italics	with  ncv can be confused with an absent or cancelled ncv.  If
       italics should work with	colors,	then the ncv value must	be  specified,
       even if it is zero.

       Different  commercial  ports  of	 terminfo and curses support different
       subsets of the XSI Curses standard and (in some cases) different	exten-
       sion sets.  Here	is a summary, accurate as of October 1995:

       o   SVR4, Solaris, ncurses -- These support all SVr4 capabilities.

       o   SGI -- Supports the SVr4 set, adds one undocumented extended	string
	   capability (set_pglen).

       o   SVr1, Ultrix	-- These support a restricted subset of	terminfo capa-
	   bilities.   The  booleans  end  with	 xon_xoff;  the	 numerics with
	   width_status_line; and the strings with prtr_non.

       o   HP/UX -- Supports the  SVr1	subset,	 plus  the  SVr[234]  numerics
	   num_labels,	 label_height,	label_width,  plus  function  keys  11
	   through 63, plus plab_norm, label_on, and label_off,	plus some  in-
	   compatible extensions in the	string table.

       o   AIX	-- Supports the	SVr1 subset, plus function keys	11 through 63,
	   plus	a number of incompatible string	table extensions.

       o   OSF -- Supports both	the SVr4 set and the AIX extensions.

				files containing terminal descriptions

       @TABS@(1), tic(1M), infocmp(1M),	curses(3X), curs_color(3X), curs_vari-
       ables(3X), printf(3), term(5).  term_variables(3X).  user_caps(5).

       Zeyd M. Ben-Halim, Eric S. Raymond, Thomas E. Dickey.  Based on pcurses
       by Pavel	Curtis.



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