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TFMTODIT(1)		    General Commands Manual		   TFMTODIT(1)

NAME
       tfmtodit	- create font files for	use with groff -Tdvi

SYNOPSIS
       tfmtodit	[ -sv ]	[ -ggf_file ] [	-kskewchar ] tfm_file map_file font

       It is possible to have whitespace between a command line	option and its
       parameter.

DESCRIPTION
       tfmtodit	creates	a font file for	use with groff -Tdvi.  tfm_file	is the
       name of the TeX font metric file	for the	font.  map_file	is a file giv-
       ing  the	 groff names for characters in the font; this file should con-
       sist of a sequence of lines of the form:

	      n	c1 c2 ...

       where n is a decimal integer giving the position	of  the	 character  in
       the  font,  and c1, c2,...  are the groff names of the character.  If a
       character has no	groff names but	exists in the tfm file,	then  it  will
       be  put	in  the	 groff font file as an unnamed character.  font	is the
       name of the groff font file.  The groff font file is written to font.

       The -s option should be given if	the font is special (a font is special
       if troff	should search it whenever a character is not found in the cur-
       rent font.)  If the font	is special, it should be listed	in  the	 fonts
       command	in  the	 DESC  file; if	it is not special, there is no need to
       list it,	since troff can	automatically mount it when it's first used.

       To do a good job	of math	typesetting, groff requires font metric	infor-
       mation not present in the tfm file.  The	reason for this	 is  that  TeX
       has  separate  math italic fonts	whereas	groff uses normal italic fonts
       for math.  The additional information required by groff is given	by the
       two arguments to	the math_fit macro in the Metafont  programs  for  the
       Computer	 Modern	 fonts.	 In a text font	(a font	for which math_fitting
       is false), Metafont normally ignores these two arguments.  Metafont can
       be made to put this information in the gf file by loading the following
       definition after	cmbase when creating cm.base:

	      def ignore_math_fit(expr left_adjustment,right_adjustment) =
		  special "adjustment";
		  numspecial left_adjustment*16/designsize;
		  numspecial right_adjustment*16/designsize;
		  enddef;

       For the EC font family, load the	following definition after exbase  (it
       is probably easiest to patch exbase.mf locally):

	      def ignore_math_fit(expr left_adjustment,right_adjustment) =
		  ori_special "adjustment";
		  ori_numspecial left_adjustment*16/designsize;
		  ori_numspecial right_adjustment*16/designsize;
		  enddef;

       The  gf	file  created  using this modified cm.base or exbase should be
       specified with the -g option.  The -g option should not be given	for  a
       font for	which math_fitting is true.

OPTIONS
       -v     Print the	version	number.

       -s     The  font	 is  special.  The effect of this option is to add the
	      special command to the font file.

       -kn    The skewchar of this font	is at position n.  n should be an  in-
	      teger; it	may be given in	decimal, or with a leading 0 in	octal,
	      or  with a leading 0x in hexadecimal.  The effect	of this	option
	      is to ignore any kerns whose second component is	the  specified
	      character.

       -ggf_file
	      gf_file is a gf file produced by Metafont	containing special and
	      numspecial commands giving additional font metric	information.

FILES
       /usr/local/share/groff/1.18.1/font/devdvi/DESC
	      Device description file.

       /usr/local/share/groff/1.18.1/font/devdvi/F
	      Font description file for	font F.

SEE ALSO
       groff(1), grodvi(1), groff_font(5)

Groff Version 1.18.1	       27 February 2002			   TFMTODIT(1)

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