Computer Dictionary/Lotus 1-2-3
A spreadsheet for MS-DOS from [[Computer Dictionary/Lotus
Development Corporation|Lotus Development Corporation]]. It can be programmed using "macros" and comes with a separate program to produce graphs and charts but this cannot be run at the same time as the spreadsheet. It has keyboard-driven pop-up menus as well as one-key commands, making it fast to operate. Lotus 1-2-3 supported EGA and later VGA graphics. Early versions used the filename extension "WK1".
Lotus 1-2-3 has been the subject of several [[Computer Dictionary/user interface copyright|user interface copyright]] court cases in the US.