You need to read the instructions text file to learn how to run it. It will be RUN nnn where nnn is the line number. Just typing RUN doesn't work because the initialisation code is at the end to speed things up.
Ah, I did not read the instructions of course but I did figure out it ran from line 800 (although it is not loading the UDG?!). The controls are a fun spin on up, down, left and right. Will check my code again for errors.
