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- 10 XU=-5 : XO=5 : YU=-5 : YO=5
- 20 SYS 37173,"INT(X)",XU,XO,YU,YO
- 30 :
- 40 YP=ABS(YO/(YO-YU))*199
- 50 FOR XV=XU TO XO
- 60 : XP=ABS((XV-XU)/(XO-XU))*319
- 70 : FOR I=-3 TO 3 : SYS 38144,XP,ABS(YP+I) : NEXT I
- 80 NEXT XV
- 90 :
- 100 XP=ABS(XU/(YO-YU))*319
- 110 FOR YH=XU TO XO
- 120 : YP=ABS((YO-YH)/(YO-YU))*199
- 130 : FOR I=-3 TO 3 : SYS 38144,ABS(XP+I),YP : NEXT I
- 140 NEXT YH
- 150 :
- 160 GETZ$ : IF Z$="" THEN 160
- 170 SYS40211
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