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+ ##
+ ## OSSP uuid - Universally Unique Identifier
+ ## Copyright (c) 2004 Ralf S. Engelschall <rse@engelschall.com>
+ ## Copyright (c) 2004 The OSSP Project <http://www.ossp.org/>
+ ##
+ ## This file is part of OSSP uuid, a library for the generation
+ ## of UUIDs which can found at http://www.ossp.org/pkg/lib/uuid/
+ ##
+ ## Permission to use, copy, modify, and distribute this software for
+ ## any purpose with or without fee is hereby granted, provided that
+ ## the above copyright notice and this permission notice appear in all
+ ## copies.
+ ##
+ ## THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ ## WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ ## MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ ## IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+ ## CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ ## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ ## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+ ## USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ ## ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ ## OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ ## OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ ## SUCH DAMAGE.
+ ##
+ ## uuid.pod: manual page
+ ##
+
+ =pod
+
+ =head1 NAME
+
+ B<OSSP uuid> - B<Universally Unique Identifier>
+
+ =head1 SYNOPSIS
+
+ ...FIXME...
+
+ =head1 DESCRIPTION
+
+ =head2 Overview
+
+ B<UUID> stands for B<U>niversal B<U>nique B<ID>entifier (aka B<GUID>
+ which stands for B<G>lobally B<U>nique B<ID>entifier). B<UUID>s are 128
+ bit numbers assigned to any object and which are intended to have a high
+ likelihood of uniqueness over space and time and are computationally
+ difficult to guess.
+
+ A B<UUID> is usually encoded using the ASCII character string
+ representation described in ISO/IEC 11578:1996: a string
+ consisting of 8 hexadecimal digits followed by a hyphen,
+ then three groups of 4 hexadecimal digits each followed by a
+ hyphen, then 12 hexadecimal digits. An example of a B<UUID> is
+ "C<54531d28-402b-11d8-af12-0002a5094c23>".
+
+ =head2 Uniqueness
+
+ The mechanism used to guarantee that B<UUID>s are unique is
+ through combinations of hardware addresses, time stamps and random
+ seeds.
+
+ There is a reference in the B<UUID> to the hardware (MAC) address of
+ the first network interface card (NIC) on the host which generated the
+ B<UUID> -- this reference is intended to ensure the B<UUID> will be
+ unique in space as the MAC address of every network card is assigned by
+ a single global authority (IEEE) and is guaranteed to be unique.
+
+ The next component in a B<UUID> is a timestamp which, as clock always
+ (should) move forward, will be unique in time.
+
+ Just in case some part of the above goes wrong (the hardware address
+ cannot be determined or the clock moved a step backward), there is
+ a random component placed into the B<UUID> as a "catch-all" for
+ uniqueness.
+
+ =head1 APPLICATION PROGRAMMING INTERFACE
+
+ ...FIXME...
+
+ =head1 SEE ALSO
+
+ See the following are references to more B<UUID> documentation and specifications:
+
+ =over 4
+
+ =item
+
+ B<UUIDs and GUIDs>,
+ IETF Internet Draft (expired),
+ Paul J. Leach, Rich Salz,
+ February 1998, 27 pages,
+ http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt
+
+ =item
+
+ B<DCE 1.1: Remote Procedure Call>,
+ appendix B<Universally Unique Identifier>,
+ Open Group Technical Standard
+ Document Number C706, August 1997, 737 pages,
+ (supercedes C309 DCE: Remote Procedure Call 8/1994,
+ which was basis for ISO/IEC 11578:1996 specification),
+ http://www.opengroup.org/publications/catalog/c706.htm
+
+ =item
+
+ B<Information technology -- Open Systems Interconnection (OSI) -- Remote Procedure Call (RPC)>,
+ ISO/IEC 11578:1996,
+ August 2001, 570 pages, (CHF 340,00),
+ http://www.iso.ch/cate/d2229.html
+
+ =item
+
+ B<HTTP Extensions for Distributed Authoring (WebDAV)>,
+ section B<6.4.1 Node Field Generation Without the IEEE 802 Address>,
+ IETF RFC 2518,
+ February 1999, 94 pages,
+ http://www.ietf.org/rfc/rfc2518.txt
+
+ =item
+
+ B<A UUID URN Namespace>,
+ P. Leach, M. Mealling, R. Salz,
+ IETF Internet Draft draft-mealling-uuid-urn-01,
+ October 2003, 31 pages,
+ http://www.ietf.org/internet-drafts/draft-mealling-uuid-urn-01.txt
+
+ =item
+
+ B<DCE 1.1 compliant UUID functions>,
+ FreeBSD manual pages uuid(3) and uuidgen(2),
+ http://www.freebsd.org/cgi/man.cgi?query=uuid&manpath=FreeBSD+5.2-RELEASE
+
+ =cut
+
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