Spectrum expanders who read with a hot flush of anticipation our review on the XK system building package should note that the all-important RAM packs are being produced by Spectrum Electronics, c/o Micro Computer Systems of Luton, 110 Leagrave Road, Luton, Beds.

We had a slight glitch in the 3D drawing program for the BBC in issue 92, where two lines were missed out. These should read:

2930 ENDPROC
2940 DEFPROCleft(points%)