I can't remember, but it would be whatever is the first listing in this: http://www.worldofspectrum.org/ZX81BasicProgramming/frontcvr.jpg http://www.worldofspec

I can't remember, but it would be whatever is the first listing in this: http://www.worldofspectrum.org/ZX81BasicProgramming/frontcvr.jpg http://www.worldofspectrum.org/ZX81BasicProgramming/frontcvr...