Date: Mon, 20 Apr 92 19:10:43 GMT
From: kuku AT acds DOT physik DOT rwth-aachen DOT de (Christoph Kukulies)
To: djgpp AT sun DOT soe DOT clarkson DOT edu
Subject: windows/regions etc.
Status: O

I've seen in DJ's graphics C++ code that there are things like regions
and that stuff.

Does anyone know where I can find the essential algorithm underlying
modern Window systems, e.g. the X-Window System? I've heard that AT&T
claims a patent on parts of it (Backing Store).

--Chris