Draws a filled rectangle covering the entire port in the port's background color.
graphics-ports
clear-graphics-port port
| port⇩ | 
A graphics port. | 
The function clear-graphics-port draws a filled rectangle in port covering the entire port in the port's background. All other graphics state parameters are ignored.
CAPI User Guide and Reference Manual (Unix version) - 01 Dec 2021 19:33:02