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 example, 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 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 dia-
       log 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/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 append 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  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 equa-
       tions (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 the program. It was published as part of the Metafontware technical report, available from the TeX Users Group.  Paul
       Richards ported it to Unix.

Web2C 7.3.1							 14 December 1993							GFTODVI(1)