10 SCREEN 0, 0, 0, 0
20 KEY OFF
30 COLOR 0, 7
40 CLS
50 PEN ON
60 LOCATE 25, 30, 0: PRINT "PRESS ANY KEY TO EXIT";
70 IF INKEY$ <> "" THEN COLOR 7,0 : CLS : SYSTEM
80 IF PEN(3) = 0 THEN GOTO 70
90 X% = PEN(9): Y% = PEN(8)
100 IF X% > 80 THEN X% = 80
110 IF Y% > 25 THEN Y% = 25
120 LOCATE Y%, X%, 0
130 PRINT CHR$(219);
140 GOTO 70
