TFMTODIT(1)							  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
       giving the groff names for characters in the font;  this	 file  should
       consist 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	 spe-
       cial  if	 troff	should search it whenever a character is not found in
       the current 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
       information 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
	      integer; 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  informa-
	      tion.

FILES
       /usr/share/groff/1.18.1.1/font/devdvi/DESC
	      Device description file.

       /usr/share/groff/1.18.1.1/font/devdvi/F
	      Font description file for font F.

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



Groff Version 1.18.1.1	       26 February 2002			  TFMTODIT(1)

UNIX/Linux commands referenced on this page:

1. groff
2. file
3. as
4. troff
5. patch
6. which
7. at