grep for "XXXXXX" in these files for "holes" in -lvplot that need to
be fixed.

Vppen purposely ignores initial erases, since they are usually pretty
much meaningless anyway. Whether the output has an initial erase or
not is entirely dependent on whether initial erases are "forced" by
the command line argument "erase".

Patterns setting commands are not compressed out as are all the other
attributes.

Polygon fill patterns are needlessly changed in dimension to 600 pixels
per inch.

Vppen will happily dump raw vplot to your screen if you don't redirect
the output.

vptextT.c is not used.
