/* BEGIN INCLUDE SEGMENT ... symbol_block.incl.pl1
coded February 8, 1972 by Michael J. Spier	*/

/* last modified may 3, 1972  by M. Weaver */

declare	1 sb aligned based(sblkp),		/* structure describing a standard symbol block */
	2 decl_vers fixed bin,		/* version number of current structure format */
	2 identifier char(8) aligned,		/* symbolic code to define purpose of this symb block */
	2 gen_version_number fixed bin,	/* positive integer designating version of object generator */
	2 gen_creation_time fixed bin(71),	/* clock reading of date/time generator was created */
	2 obj_creation_time fixed bin(71),	/* clock reading of date/time object was generated */
	2 generator char(8) aligned,		/* name of processor which generated segment */
	2 gen_name_offset bit(18) unaligned,	/* offset of generator name in words rel to base of symbol block */
	2 gen_name_length bit(18) unaligned,	/* length of printable generator version name in characters */
	2 uid_offset bit(18) unaligned,	/* offset of creator id in words rel to base of symbol block */
	2 uid_length bit(18) unaligned,	/* length of standard Multics id of object creator in characters */
	2 comment_offset bit(18) unaligned,	/* offset of comment in words relative to base of symbol block */
	2 comment_length bit(18) unaligned,	/* length of printable generator comment in characters */
	2 tbound bit(18) unaligned,		/* specifies mod of text section base boundary */
	2 stat_bound bit(18) unaligned,	/* specifies mod of internal static base boundary */
	2 source_map bit(18) unaligned,	/* offset relative to base of symbol block of source map structure */
	2 area_ptr bit(18) unaligned,		/* offset of block info in words relative to base of symbol block */
	2 symb_base bit(18) unaligned,	/* back pointer (rel to base of symb block) to base of symb section */
	2 block_size bit(18) unaligned,	/* size in words of entire symbol block */
	2 next_block bit(18) unaligned,	/* if ^= "0"b, is thread (rel to base of symb section) to next symb block */
	2 rel_text bit(18) unaligned,		/* offset rel to base of symbol block of text sect relocation info */
	2 rel_def bit(18) unaligned,		/* offset rel to base of symb block of def section relocation info */
	2 rel_link bit(18) unaligned,		/* offset rel to base of symb block of link sect relocation info */
	2 rel_symb bit(18) unaligned,		/* offset rel to base of symb block of symb sect relocation info */
	2 default_truncate bit(18) unaligned,	/* offset RTBOSB for binder to automatically trunc. symb sect. */
	2 optional_truncate bit(18) unaligned;	/* offset RTBOSB for binder to optionally truncate symb section */

/* END INCLUDE SEGMENT ... symbol_block.incl.pl1 */


*/
                                          -----------------------------------------------------------


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. .

                                          -----------------------------------------------------------

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

*/