On the Options screen (press 3 from the main menu) you have some confused information: it says "KEY 0 DRAW LEFT" (that's zero) and "KEY O CLEAR SCREEN" (that's letter O). Those keys are the wrong way round!
Thank you, Richard. I think I uploaded the wrong build, as that issue had already been corrected. The correct version has been updated now, thank you very much for letting me know.
