10/20/83  send_mail request:  in_reply_to, irt

Syntax:  irt {message_specifiers} {-control_arg}


Function:  when given no arguments, displays the list of messages being
answered by this send_mail (the In-Reply-To field); when given
arguments, replaces said list with a new set.


Arguments:
message_specifiers
   identifies the messages which are to become the new list of messages
   being answered by this send_mail.  Use of message specifiers is
   incompatible with the -default control argument.  For more
   information on message specifiers, type:
         help message_specifiers.gi


Control arguments:
-default, -dft
   specifies that the list of messages being answered should be reset
   to the list supplied by the reply request when this send_mail
   invocation was created.  The list_original request may be used to
   display the contents of this default list.   Use of this control
   argument is incompatible with the use of message specifiers.
-no_default, -ndft
   specifies that the list of messages should not be reset to the list
   supplied by the reply request.  (This control argument is intended
   for use with abbreviations).


-include_deleted, -idl
   includes all messages in the mailbox whether or not they have been
   deleted when processing the message_specifiers to determine which
   messages will be included in the new list of messages being
   answered.
-only_deleted, -odl
   includes only those messages which have been deleted.
-only_non_deleted, -ondl
   includes only those messages which have not been deleted.  (Default)


Notes:
Use of this request to change the list of messages being answered does
not change the default set of messages processed by the other original
requests (print_original, etc).


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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