The FORTRAN routines are probably not as well tested as they should be.
There may easily still be bugs lurking in some of the lesser-used
routines. Several VPLOT commands as yet have no corresponding libvplot
routines.

Beware of running "indent" on vp_raster.c.
Vp_raster doesn't always compact things as well as it could.

I should have switched vp_fat and vp_text to take sizes and lengths in
floating point inches when I had the chance. It didn't occur to me then
and now it's too late -- if I tried to change the units from the screwy
quantized ones set back in 1979 by persons unknown everyone would come
beating down my door. Vp_gtext gives an escape from quantized text
sizes, but it would be very difficult indeed to try to do anything about the
quantized vp_fat command at this date.
