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(groff)DESC File Format

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`DESC' File Format
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   The `DESC' file can contain the following types of line:

`res N'
     There are N machine units per inch.

`hor N'
     The horizontal resolution is N machine units.

`vert N'
     The vertical resolution is N machine units.

`sizescale N'
     The scale factor for point sizes.  By default this has a value
     of 1.  One scaled point is equal to one point/N.  The arguments to
     the `unitwidth' and `sizes' commands are given in scaled points.
     Note: Fractional Type Sizes, for more information.

`unitwidth N'
     Quantities in the font files are given in machine units for fonts
     whose point size is N scaled points.

`tcommand'
     This means that the postprocessor can handle the `t' and `u'
     output commands.

`sizes S1 S2 ... SN 0'
     This means that the device has fonts at S1, S2, ...  SN scaled
     points.  The list of sizes must be terminated by a 0.  Each SI can
     also be a range of sizes M-N.  The list can extend over more than
     one line.

`styles S1 S2 ... SM'
     The first M font positions are associated with styles S1 ... SM.

`fonts N F1 F2 F3 ... FN'
     Fonts F1 ... FN are mounted in the font positions M+1, ..., M+N
     where M is the number of styles.  This command may extend over
     more than one line.  A font name of 0 means no font is mounted on
     the corresponding font position.

`family FAM'
     The default font family is FAM.

`charset'
     This line and everything following in the file are ignored.  It is
     allowed for the sake of backwards compatibility.

   The `res', `unitwidth', `fonts' and `sizes' lines are mandatory.
Other commands are ignored by `gtroff' but may be used by
postprocessors to store arbitrary information about the device in the
`DESC' file.