Edlin

Edlin was created by Tim Paterson in two weeks in 1980, for Seattle Computer Products's 86-DOS (QDOS)[3] based on the CP/M context editor ED,[4][5] itself distantly inspired by the Unix ed line editor.

Windows 95, 98 and ME ran on top of an embedded version of DOS, which reports itself as MS-DOS 7.

However, unlike most other external DOS commands, it has not been transformed into a native Win32 program.

When finished entering lines, Ctrl-C returns to the edlin command prompt.

A GPL-licensed clone of Edlin that includes long filename support is available for download as part of the FreeDOS project.

EDLIN.COM (among several other commands) in IBM PC DOS 1.0
Using EDLIN for typing Japanese with the ATOK 8 input method editor, running on MS-DOS 3.3C for the PC-9800 series