




The FLI type ns-rect is a structure type for use as the Objective-C type NSRect. The structure has two slots, :origin of foreign type ns-point and :size of foreign type ns-size.
When used directly in method definition or invocation, it allows automatic conversion to/from a vector of four elements of the form #(x y width height).
LispWorks Objective-C and Cocoa Interface User Guide and Reference Manual - 21 Mar 2017