03/31/88  Multics video system input editor requests

List of video system input editor requests:
   The video system input line editor provides a subset of Emacs
   editor requests to video system users for editing the current
   input line.  The following list first gives the ASCII character
   and then the operation associated with that character.

^F
   Position the cursor one character forward.
^B
   Position the cursor one character backward.
ESC F
   Position the cursor one word forward.



ESC B
   Position the cursor one word backward.
^E
   Position the cursor to end of the line.
^A
   Position the cursor to beginning of the line.
^D
   Delete one character forward.
DEL or #
   Delete one character backward.
ESC D
   Delete one word forward.
ESC DEL or ESC #
   Delete one word backward.



^K
   Delete to end of the line.
@
   Delete to the beginning of the line.
^Y
   Retrieve the last deleted characters or line.
ESC Y
   Retrieve previously deleted characters or line.
^T
   Interchange the previous two characters with each other.
ESC T
   Interchange the current (or last) word with the previous word.
^Q
   Accept the next character without treating it as an editor request.



^L
   Clear the window and redisplay the input line.
ESC C
   Capitalize (only) the first character of the current (or last) word.
ESC L
   Change the current (or last) word to lowercase.
ESC U
   Change the current (or last) word to uppercase.
ESC ?
   List valid editor request characters.


Summary of cursor positioning requests and deletion requests:

                   | One character | One Word  | To Edge of Line|
   ----------------|---------------|-----------|----------------|
           | Right | Control-F     | ESC F     | Control-E      |
    Move   |-------|---------------|-----------|----------------|
    Cursor | Left  | Control-B     | ESC B     | Control-A      |
   --------|-------|---------------|-----------|----------------|
           | Right | Control-D     | ESC D     | Control-K      |
    Delete |-------|---------------|-----------|----------------|
           | Left  | DEL           | ESC DEL   | @              |
           |       | or #          | or ESC #  |                |
   --------------------------------------------------------------


Notes:
The ASCII characters given in the above list are the characters
associated with the corresponding functions by default. These
associations can be displayed with the command

  io_call control WINDOW_SWITCH get_editor_key_bindings key_sequence

and may be changed with the command

  io_call control WINDOW_SWITCH set_editor_key_bindings
    key_sequence1 {user_routine1} {control_args1} ...
    key_sequenceN {user_routineN} {control_argsN}



A "word" is a string of one or more consecutive "token characters".
The set of token characters may be displayed with the command

  io_call control WINDOW_SWITCH get_token_characters

and may be changed with the command

  io_call control WINDOW_SWITCH set_token_characters TOKEN_CHAR_STRING

Type "help window_io_" for details about these commands.



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Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group BULL including BULL HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell BULL Inc., Groupe BULL
and BULL HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture 
for managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

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Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, BULL or BULL HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by BULL HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved