The TECO character-oriented text editor, famous for its powerful but arcane editing and programming language, was ported to Multics by Rick Gumpertz and Mike Grady. TECO's steep learning curve makes it unsuitable for casual users, but its command set's low dependence on control characters and non-alphanumeric characters makes it easier to use on terminals with simplified keyboards like tablets and smartphones.
Although Multics TECO is based on the PDP-10 version of the editor there are some minor variations in the command set.
The following 4 rules and 12 commands are enough for useful basic editing of text files on Multics with TECO.
$) followed by the
$ Enterand TECO will execute the commands in order.
The TECO command prompt is
Z. TECO commands are case-insensitive.
|1.||Save filename specified on command line||7.||Jump to end of file|
|2.||Quit TECO (no save, use ||8.||Type from pointer to end of line|
|3.||Move character forward||9.||Insert text|
|4.||Move character backward||10.||Delete character at pointer|
|5.||Move to beginning of next line||11.||Delete current line|
|6.||Jump to beginning of file||12.||Search for text|
 May insert numeric prefix to move/delete multiple characters (negative reverses direction)
 May insert numeric prefix to move/type/delete multiple lines (negative reverses direction); (
K only) prefix
H: type/delete whole file
 Any character not included in text may be substituted for the delimiters
For more information, try the
help teco command or see the TECO section in Multics System Tools Program Logic Manual.