09/10/87  compare_pl1.ec, cpp.ec

Syntax:  ec >t>cpp path1 path2


Function: The compare_pl1 exec_com compares two PL/I programs of
dissimilar formats.


Arguments:
path1, path2
   are the relative or absolute pathnames of the source programs to be
   compared.  The .pl1 suffix is assumed.  The star convention is not
   allowed; the equal convention is allowed for path2.  Archive
   component pathnames are allowed.


Notes: All format_pl1 control comments are removed from both programs.
Then, format_pl1 is used to put both programs into a canonical style.
The compare_ascii command is used to see how the source programs
differ.  Vertical white space inserted or deleted between statements is
not ignored.  The line numbers in the compare_ascii output is not
accurate due to possible white space or statements broken over lines.


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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