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The GNUstep base library provides functions and macros to do all the
most common geometry operations on `NSPoint`s, `NSSize`s
and `NSRect`s (such as determining if a point is contained in a
rectangle, computing the intersection of two rectangles, etc). It
would be off topic to discuss them here; please refer to the base
library documentation whenever you need to do some of these common
geometrical operations.

2008-01-16