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GFTODVI(1)									       GFTODVI(1)

       gftodvi - make proof sheets from generic font files

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

       This  manual page is not meant to be exhaustive.  The complete documentation for this ver-
       sion 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

       gftodvi uses other fonts in addition to the main gf file.  A `gray' font is used to  type-
       set 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 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 out-
       put 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.

       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.

       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.

	      The default fonts.

	      The Metafont sources.

       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.

       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)
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