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   pic    ( 1 )

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Conversion

To obtain a stand-alone picture from a pic file, enclose your pic
       code with .PS and .PE requests; roff configuration commands may
       be added at the beginning of the file, but no roff text.

       It is necessary to feed this file into groff without adding any
       page information, so you must check which .PS and .PE requests
       are actually called.  For example, the mm macro package adds a
       page number, which is very annoying.  At the moment, calling
       standard groff without any macro package works.  Alternatively,
       you can define your own requests, e.g., to do nothing:

              .de PS
              ..
              .de PE
              ..

       groff itself does not provide direct conversion into other
       graphics file formats.  But there are lots of possibilities if
       you first transform your picture into PostScript® format using
       the groff option -Tps.  Since this ps-file lacks BoundingBox
       information it is not very useful by itself, but it may be fed
       into other conversion programs, usually named ps2other or
       pstoother or the like.  Moreover, the PostScript interpreter
       ghostscript (gs(1)) has built-in graphics conversion devices that
       are called with the option

              gs -sDEVICE=<devname>

       Call

              gs --help

       for a list of the available devices.

       An alternative may be to use the -Tpdf option to convert your
       picture directly into PDF format.  The MediaBox of the file
       produced can be controlled by passing a -P-p papersize to groff.

       As the Encapsulated PostScript File Format EPS is getting more
       and more important, and the conversion wasn't regarded trivial in
       the past you might be interested to know that there is a
       conversion tool named ps2eps which does the right job.  It is
       much better than the tool ps2epsi packaged with gs.

       For bitmapped graphic formats, you should use pstopnm; the
       resulting (intermediate) pnm(5) file can be then converted to
       virtually any graphics format using the tools of the netpbm
       package.