TODO revision 75584 
1Dotted and dashed ellipses.
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3In troff mode, dotted and dashed splines.
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5Make DELIMITED have type lstr; this would allow us to give better
6error messages for problems within the body of for and if constructs.
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8In troff mode without -x, fake \D't' with .ps commands.
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10Perhaps an option to set command char.
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12Add an output class for dumb line printers. It wouldn't be pretty but
13it would be better than nothing. Integrate it with texinfo.  Useful
14for groff -Tascii as well.
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16Option to allow better positioning of arrowheads on arcs.
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18Perhaps add PostScript output mode.
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20Change the interface to the output class so that output devices have
21the opportunity to handle arrowheads themselves.
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23Consider whether the line thickness should scale.
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25Consider whether the test in a for loop should be fuzzy (as it
26apparently is in grap).
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28Possibly change fillval so that zero is black.
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30Provide a way of getting text blocks (positioned with `.in' rather
31than \h), into pic.  Should be possible to use block of diverted text
32in pic.  Possibly something similar to T{ and T} in tbl.
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34Option to provide macro backtraces.
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36Have a path that is searched by `copy' statement.  Set by environment
37variable or command line option.
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