SCREEN 12 LINE (100, 200)-(500, 200) LINE (300, 0)-(300, 400) LOCATE 14, 12, 0: PRINT -1 LOCATE 14, 63, 0: PRINT 1 LOCATE 1, 40, 0: PRINT 1 LOCATE 26, 40, 0: PRINT -1 FOR x = -1 TO 1 STEP .005 y = x x% = 300 + 200 * x y% = 200 - 200 * y PSET (x%, y%) NEXT x