This is the source of DED - a screen editor. It originally came from Queen Mary College in London but would not compile on our system and did not cater for our screen terminals. It has been modified and cleaned up - it should now compile on V6 systems ok. It will now handle the following terminals: hazeltine 1500 itt vc404 (also known as COPS10) and is partially working for Teleray 1061 (alias DEC VT52) terminals. To make it work on a new terminal the following mods should be made: add new terminal type in ded.h change definition of TTY in ded.h possibly modify the characters used for cursor etc in itt.c change cursor positioning mechanism in itt.c change screen clear mechanism in map.c fix tty modes initialization in tty.c Bob Kummerfeld University of Sydney Australia