Modifies a rectangle to be a union of itself and another rectangle.
graphics-ports
union-rectangle rectangle left top right bottom => rectangle
| rectangle⇩ | 
A rectangle. | 
| left⇩ | 
A real number. | 
| top⇩ | 
A real number. | 
| right⇩ | 
A real number. | 
| bottom⇩ | 
A real number. | 
| rectangle | 
A rectangle. | 
The macro union-rectangle modifies rectangle to be the union of rectangle and the rectangle specified by (left top right bottom).
CAPI User Guide and Reference Manual (Unix version) - 01 Dec 2021 19:33:02