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GFTODVI(1)		     General Commands Manual		      GFTODVI(1)

NAME
     gftodvi - make proof sheets from generic font files

SYNOPSIS
     gftodvi [-overflow-label-offset=real] [-verbose] gf_file_name

DESCRIPTION
     This  manual page is not meant to be exhaustive. The complete documentation
     for this version of TeX can be found in the info file or  manual  Web2C:  A
     TeX implementation.

     The  gftodvi program converts a generic font (gf) file output by, for exam-
     ple, mf(1), to a device independent (DVI) file (that can  then  be  typeset
     using the same software that has already been written for TeX). The charac-
     ters  in the gf file will appear one per page, with labels, titles, and an-
     notations as specified in Appendix H (Hardcopy Proofs) of The Metafontbook.

     gftodvi uses other fonts in addition to the main gf file.	A `gray' font is
     used to typeset the  pixels  that	actually  make	up  the  character.  (We
     wouldn't  want  all  the  pixels to be simply black, since then labels, key
     points, and other information would be lost.)  A `title' font is  used  for
     the  information at the top of the page. A `label' font is used for the la-
     bels on key points of the figure. A `slant' font is used to typeset  diago-
     nal lines, which otherwise have to be simulated using horizontal and verti-
     cal  rules.   The	default gray, title, and label fonts are gray, cmr8, and
     cmtt10, respectively; there is no default slant font.

     To change the default fonts, you can give special commands in your Metafont
     source file, or you can change the fonts online. An online dialog ensues if
     you end the gf_file_name with a `/'. For example,
       gftodvi cmr10.300gf/
       Special font substitution: grayfont black
       OK; any more? grayfontarea /home/art/don/
       OK; any more? slantfont /home/fonts/slantimagen6
       OK; any more? <RET>
     will use /home/art/don/black as the `gray' font  and  /home/fonts/slantima-
     gen6  as  the `slant' font (this name indicates a font for lines with slope
     1/6 at the resolution of an Imagen printer).

     The gf_file_name on the command line must be complete. Because the  resolu-
     tion  is part of the extension, it would not make sense to append a default
     extension as is done with TeX or DVI-reading software. The output file name
     uses the same root as the gf file, with the .dvi extension added. For exam-
     ple, the input file cmr10.2602gf would become cmr10.dvi.

OPTIONS
     The argument to -overflow-label-offset  specifies	the  distance  from  the
     right  edge  of  the character bounding box at which the overflow equations
     (if any) are typeset.  The value is given in TeX points. The default  is  a
     little over two inches.

     Without  the  -verbose option, gftodvi operates silently. With it, a banner
     and progress report are printed on stdout.

ENVIRONMENT
     gftodvi looks for gf_file_name using the environment variable  GFFONTS.  If
     that is not set, it uses the variable TEXFONTS. If that is not set, it uses
     the system default.

     See tex(1) for the details of the searching.

FILES
     {gray.tfm,...}
	    The default fonts.

     {gray.mf,...}
	    The Metafont sources.

SEE ALSO
     tex(1), mf(1).
     Donald  E. Knuth, The Metafontbook (Volume C of Computers and Typesetting),
     Addison-Wesley, 1986, ISBN 0-201-13445-4.
     Donald E. Knuth et al., Metafontware.

AUTHORS
     Donald E. Knuth wrote and still maintains the program. It was published  as
     part  of the Metafontware technical report. Paul Richards originally ported
     it    to	 Unix.	   Bug	  reports    should    go    to    tex-k@tug.org
     (https://lists.tug.org/tex-k).

Web2C 2025			  4 March 2021			      GFTODVI(1)

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