Simple line editor on Multics
Author: Ken Thompson ? Info: http://web.mit.edu/multics-history/source/Multics/doc/info_segments/qedx_.info Family: MulticsEditorFamily Platform: Multics License: Commercial
"a straightforward line-oriented editor with a standard complement of requests, including addition and deletion of text in multiple buffers and pattern-directed substitutions. This is the standard Multics editor."