C C PROGRAM TO DRAW A RECTANGULAR BORDER C COMMON IGX1, IGX2 DIMENSION IGX1(1600), IGX2(1600) CALL GCLEAR CALL GSTART CALL GPLOT(0,0,0) CALL GPLOT(188,0,1) CALL GPLOT(188,199,1) CALL GPLOT(0,199,1) CALL GPLOT(0,0,1) C LOOP UNTIL SWITCH REGISTER = 1 IS DETECTED 10 IF (IRDSW(0) - 1) 10,20,10 20 CALL GSTOP STOP END