




The 
inside-rectangle
 function returns 
t
 if the point (
x y
) is inside 
rectangle
. The 
rectangle
 is expected to be ordered; if the rectangle is specified by (
left right top bottom
), then 
left
 must be less than 
right
, and 
bottom
 must be less than 
top
. The lines 
y = bottom
 and 
x = right
 are not considered to be inside the rectangle.