[Snip] would exclude TECO which I regard as a "text editor" (although Johnny strongly disagrees since his concept is a "line editor" - if I remember correctly). In any case, since TECO has been mentioned, I believe that KED (a screen editor - KEYBOARD EDITOR) which was produced by DEC for the VT100 and other similar VDTs qualifies. KED has been distributed with all versions of RT-11 at least since V04.00 in 1980. KED runs under both RT-11 and RSTS/E and will at least qualify as much as TECO. The DEC variants are limited to 24 lines by 80 columns along with 24 lines by 132 columns if a VT100 is being used with the AVO hardware. MACROs are supported, so some extensive editing can be accomplished. Auxiliary input and output files are also supported. But, note that KED is a screen editor without the sort of things that a word processor is likely to have. What you see is what you get. Ersatz-11, the PDP-11 emulator by John Wilson of Dbit, now supports screens up to 255 lines by 255 columns, although in practice, no Windows system can properly support those values. On my Windows XP system, the video card and monitor support up to about 50 lines by 200 columns. As a enhancement to KED, I added code which runs under RT-11 and RSTS/E which also supports up to 255 lines by 255 columns - BUT not at the same time since the screen buffer MUST be large enough to hold all of the characters on the screen. Since the actual maximum useful screen sizes are about 50 lines by 120 columns and 50 lines by 198 columns (for a maximum screen buffer of 9900 characters), I use KED under RT-11 running under Ersatz-11. With my current video card and monitor, I have chosen to use FULL SCREEN mode which is supported at 50 lines by 80 columns and 44 lines by 132 columns. The extra 20 lines available when I inspect a MACRO-11 output listing are extremely helpful. Jerome Fine