RED (Richard's Editor) is a derivative of ECCE? (qv) written by Richard Marshall.
Author: Richard Marshall Download: http://history.dcs.ed.ac.uk/archive/apps/ecce/rmm/ (Source and manual) Family: LineEditorFamily EdinburghFamily Platform: DEC PDP series, others License: Commercial
It fills in some of the gaps in the commands offered by ECCE, making it more orthogonal and predictable; and it adds some facilities from other text editors such as counting registers (I think possibly derived from the Q-registers of Teco?). The editor was written in the Edinburgh language Imp77, somewhere around 1977 or 78.
Richard Marshall also wrote a screen editor called FLOSSIE which later became IE, a very popular editor in use at Edinburgh in the 80's.