SET REGION
Sets The Shape Of a Window Based Upon Given Points Coordinates
SET REGION OF <WindowName>
RECTANGULAR <nRow>,<nCol>,<nWidth>,<nHeight>
SET REGION OF <WindowName>
ELLIPTIC <nRow>,<nCol>,<nWidth>,<nHeight>
SET REGION OF <WindowName>
POLYGONAL <aPoints> [ ALTERNATE | WINDING ]
SET REGION OF <WindowName> RESET