ED, the CP/M Line Editor
Peter Gosling · 1985
The standard editor supplied with all versions of CP/M has a long and honourable lineage. It exhibits great similarities to a number of editors developed initially for minicomputers in the 1960s, in particular to the DEC series of machines and the Data General Nova and Eclipse line. Anyone using a microcomputer with CP/M will immediately feel at home with ED if he has had some experience at operating system level on a minicomputer.