Gets and sets the top element of a rectangle.
graphics-ports
rectangle-top rectangle => top
(setf rectangle-top) top rectangle => top
rectangle
A rectangle.
top
A real number.
The macro rectangle-top returns and via setf sets the top element of rectangle .
rectangle-top
setf
rectangle is a list of numbers ( left top right bottom ).
CAPI User Guide and Reference Manual (Unix version) - 3 Aug 2017