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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 pa-
     rameter.

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 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	informa-
     tion not present in the tfm file.	The reason for this is that TeX has sep-
     arate  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 in-
     formation	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 speci-
     fied 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 spe-
	    cial 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 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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