save and regerate the current screen before and after a command

[Shiping Zhang]

I want to write a software in C in such a way that when it is invoked,
it will save the current screen, and when it exits, it will regenerate
the original screen. I use a Sun 3 with os4.  I don't know how to get
the current screen. Is the screen pattern saved somewhere in the system
accessible to the programmer?  Thanks for any information.
 
-ping    ping at cubmol.bio.columbia.edu  (128.59.128.3)