5-4-2006 or before: @ A B C D E F G        H I J K L M N O    P Q R S T U V W         X Y Z [ \ ] ^ _         ?  deleting mail prints two *s must enter ctrl chars with ^Q to avoid use as teco cmd when entering ^_ or ^Z after ^Q, must quote with ^_ how to get tab to display as graphic? how to get line feed to display as graphic rather than ^J? how get get CR to display as graphic rather than ^M? SV has Emacs version 162; UP does too; they don't act the same unlike UP's Emacs: ^_H (as Emacs command) is typed to ITS with one ^_ ITS does not recognize ^_? (and cursor doesn't move out of echo area) -- UP may do that too; the point is to emphasize that ^_? is not useful with any amount of quoting ^_ (typed to ITS with two) is not an Emacs command echo area sometimes shows extra ^_ before my key; could be ITS parser state combined with Emacs use of echo area for ITS echo and other things (just a theory) could also be timing -- type ^U ^_ and see ^_ first -- that's just the way ITS interrupt processing works, I guess, plus Emacs may have a delay before echoing C-U unlike? return doesn't end i-esarch unlike? ^X prefix echos as C-X but second character (whether ^C which is a command or ^G which aborts) echos with uparrow unlike? must push ^Q after ^S to search for control chars. (so they aren't unread and reread) but "failing I-search" message doesn't put in fake ^Q how to undo open-window, find-file? like UP's Emacs: ^Z is an Emacs command that acts slightly differently than ITS's ^Z bit prefixes: ^^ control ^[ meta ^\ meta ^C control meta but not after ^X prefix compare Emacs output with OCTPUS output -- ^G as beep, ^I as tab, most other ctrl chars with SAIL up arrow, rubout as (not sure -- perhaps rubout but won't go past beg of line?), esc as diamond also :PRINT CHAR TEST acts on ^G ^H ^_D to Emacs prints "[DDT]" before DDT's prompt -- does UP do that? Zork clears screen before running, but othewise line based ^F in DDT clears screen J in DDT doesn't print a CR before first line of output programs don't print a "transferring to DDT" fake notice before printing :KILL any way to get Emacs to restore screen after proceeding from DDT? [it will if you cleared the screen as with :PRINT, but it won't if you just hit ^Z and then p -- this may be a quirk of the implementation, that not all cmds set "screen dirty" flag -- or it may be a design allowing debugging output to stay onscreen] any way to check that Emacs has unsaved text before logging out? why do I see left-arrows and plus-or-minus when reading DOC; BBN MAN? [plus-or-minus is same as form feed] 9-1-2008: make rubout and ^_H work in info (rubout same as ^H, ^_H same as H) can I patch the system or do I have to regenerate everything?