GFTODVI(1)                  UNIX System V(1/19/91)                   GFTODVI(1)


NAME
      gftodvi - make proofsheets from generic font files

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

DESCRIPTION
      The gftodvi program converts a generic font (GF) file output by, for
      example, mf(1), to a device independent (DVI) file (that can then be
      typeset using same software that has already been written for TeX). The
      characters in the GF file will appear one per page, with labels, titles,
      and annotations 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
      labels on key points of the figure. A `slant' font is used to typeset
      diagonal lines, which otherwise have to be simulated using horizontal and
      vertical 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 io.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/slantimagen6 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. (The program
      prompts you for it if you don't give it.) Because the resolution is part
      of the extension, it would not make sense to add on a default extension
      as is done with TeX or DVI-reading software. The output file name
      defaults to the same root as the gf file, with the `dvi' extension added.
      For example, the input file io.2602gf would become io.dvi.

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

      The argument to the -overflow-label-offset option 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.



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GFTODVI(1)                  UNIX System V(1/19/91)                   GFTODVI(1)


      See tex(1) for the details of specifying options.

ENVIRONMENT VARIABLES
      gftodvi uses the environment variable GFFONTS to search for the GF file.
      If GFFONTS is not set, it uses the variable TEXFONTS.  If TEXFONTS is not
      set, it uses the system default:  /usr/TeX/fonts/tfm.

      The TEXFONTS environment variable is used to find the TFM files that the
      program needs. If TEXFONTS is not set, the system default above is used.
      See tex(1) for the details of the searching.

FILES
      /usr/TeX/fonts/tfm/{gray.tfm,...}       the default fonts

      /usr/TeX/fonts/mf/{gray.mf,...}         the Metafont sources (perhaps)

SEE ALSO
      tex(1), mf(1)
      Donald Knuth, The METAFONTbook
      Donald Knuth et al., METAFONTware

AUTHORS
      Donald Knuth wrote the program. It was published as part of the
      METAFONTware technical report, available from the TeX Users Group.  Paul
      Richards originally ported it to Unix.





























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