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OpenDarwin 7.2.1 - man page for tfmtodit (opendarwin section 1)

TFMTODIT(1)			     General Commands Manual			      TFMTODIT(1)

       tfmtodit - create font files for use with groff -Tdvi

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

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

       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 charac-
       ter.  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 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;

       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;

       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.

       -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 hexadeci-
	      mal.  The effect of this option is to ignore any kerns whose  second  component  is
	      the specified character.

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

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

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

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

Groff Version 1.18.1			    Nov  2003				      TFMTODIT(1)

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