Atari ST series - Page 362

APPENDIX I
$0F Set y Origin at Bottom
T his co m m a n d se ts th e origin o f th e y co o rd in ate sy ste m a t th e b o tto m ,
w h ich m e an s th at d o w n w ard m o v em e n t (to w a rd s th e u ser) is tre ate d as
n eg ativ e, a n d u p w a rd m o v em e n t (aw ay fro m th e u ser) is tre ate d a s po si
tive.
Input parameters
N o n e
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