Editing Spreadsheet (section)

=== Mainframe spreadsheets ===
*''The Works Records System'' at ICI developed in 1974 on IBM 370/145<ref>{{Cite web|url=http://www.computinghistory.org.uk/articles/38.htm|title = Computing History - Computing History Members}}</ref>
*ExecuCalc, from Parallax Systems, Inc.: Released in late 1982,<ref>{{Cite web|url=https://books.google.com/books?id=mhoE9lO6DpMC&dq=execucalc&pg=PA39|title=IBM 3270 Terminals Get Spreadsheet Package|work=[[Computerworld]]|date=November 22, 1982}}</ref> ExecuCalc was the first mainframe "visi-clone" which duplicated the features of VisiCalc on IBM mainframes with 3270 display terminals. Over 150 copies were licensed (35 to Fortune 500 companies). DP managers were attracted to compatibility and avoiding then-expensive PC purchases (see 1983 ''[[Computerworld]]'' magazine front page article<ref>{{Cite web|url=https://archive.org/details/sim_computerworld_1982-12-06_16_49|title=Do Spreadsheets Mean Micros|work=[[Computerworld]]|date=December 6, 1982}}</ref> and advertisement.<ref>{{Cite web|url=https://books.google.com/books?id=urtHiZ0Bk0AC&dq=execucalc&pg=PA60|title=Advertisement|work=[[Computerworld]]|date=June 20, 1983}}</ref>)