Joe wrote: Actually Lotus (and SuperCalc for CP/M) were look/feel clones of VisiCalc. VisiCalc was originally written in Apple _Integer_ BASIC and then later converted to 6502 assembly. More than Xerox, it's responsible for the existence of the Mac: if not for VisiCalc, Apple would have been bankrupted out of the computer business by 1981, but the very existence of VisiCalc sold a shitload of Apples. And by concatenation, VisiCalc is responsible for Windows. VisiCalc versus Lotus was the first look/feel copyright battle, long before Apple sued Microsoft over concepts they got from Xerox. The winner was VisiCalc, but fat lot of good it did. Eventually, Lotus bought all rights to VisiCalc and buried it. SuperCalc (despite the best efforts of Computer Associates) is long dead, and nowadays about all desktop spreadsheeting (by other than us Unix junkies) in done with Micro$oft Exc(rement)ell. And I say this as a guy who learned on the TRS-80 version of VisiCalc but whose preferred spreadsheet program is (Micro$oft) MultiPlan, which still works fine on a Z-80 and a MC68010. -- Ward Griffiths Two thousand yeare since Bethlehem and still we hear the lie, that after years of hopes and fears the best part's when we die.