It's a map designer. I have TOME21.EXT but it's only 3581 bytes long. It may have been on an Automation Disk but with no docs.
Here's more info:http://www.ultimateamiga.co.uk/HostedPr ... age66.html
I haven't got the mentioned editor. Presumably it was on 2 single sided disks. This is one to look out for on ebay.
I vaguely remember Colin saying it was "very poor" and that Misty was much better.
I got the STOS Compiler last month for £1.75 on eBay - just to have an original!
Of course as mentioned on this forum before it causes 2 bombs everywhere unless you run compiler.acb in STOS and STOS 2.06 at least for STE compatibility. It's very odd that the RSPCA in Luton have sold 2 STOS Compilers with Discovery Pack STOS Manuals and STOS - The Game Creator (Big Box Edition) in recent months.
Still got, still working: Atari 4Mb STe, 520STFM, 2.5Mb STF.
Hardware: Cumana CSA 354, Ultimate Ripper, Blitz Turbo, Synchro Express II (US and UK Versions).