spiro on SCO Xenix

[The Super User]

I'm trying to get the recently posted "spiro" program to work under SCO
Xenix SysV/286. I find that SCO Xenix lacks the plot library, so the
functions
erase,space,cont,move,openpl,linemod,closepl
are left undefined at the end of the link.

Are there plot libraries in source form for generic unix, or SCO
libraries perhaps?

Thanks!
-Jay Libove {pitt|bellcore}!darth!libove!libove *or* Jay.Libove at andrew.cmu.edu