10'AsteroidBelt 20SWITCH1:FORI=1TO4:OUTI,-1:NEXT 30LC0,0,1:?"AsteroidBelt";:GSB@W 40CLS:CLT:Y=1:X=2 50@LP:IFRND(2)=0LC15,RND(7)+1:?"*" 60LCX,Y:?" ": Y=Y+1-!IN(7)*2 70IFY<0GOTO@ED 80IFY>6GOTO@ED 90SCROLL3 100IFSCR(X,Y)GOTO@ED 110LCX,Y:?"~F3";:WAIT8:GOTO@LP 120@ED:LC0,0,1:?TICK()/6:GSB@W:F=FILE():LRUN0 130@W:IF!BTN()CONT:ELSEBEEP2 140IFBTN()CONT:ELSEBEEP5:RTN