+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the license (GNU LGPL) which comes with this package.
+
+=encoding UTF-8
+
+=head1 NAME
+
+simgrid_update_xml - updates simgrid XML files to latest version
+
+=head1 SYNOPSIS
+
+B<simgrid_update_xml> I<xml_file>
+
+=head1 DESCRIPTION
+
+simgrid_update_xml updates the simgrid XML file passed as argument. The file
+is modified in place, without any kind of backup. You may want to save a copy
+before running the script.
+
+In SimGrid XML files, the standard version is indicated in the version
+attribute of the platform tag. Current version is 3. Here is a list of major
+changes in each version.
+
+=over 4
+
+=item B<Version 0:> Used before SimGrid 3.3
+
+=item B<Version 1:> Introduced in SimGrid 3.3
+
+=over 4
+
+=item
+
+The version attribute of platform were added to allow file versionning.
+
+=item
+
+The link bandwidth changed from Mb/s to b/s; and the CPU power were changed
+from MFlop/s to Flop/s
+
+=back
+
+=item B<Version 2:> Introduced in SimGrid 3.4
+
+=over
+
+=item
+
+Several tags were renamed:
+
+ CPU -> HOST
+ NETWORK_LINK -> LINK
+ ROUTE_ELEMENT -> LINK_CTN
+ PLATFORM_DESCRIPTION -> PLATFORM
+
+=back
+
+=item B<Version 3:> Introduced in SimGrid 3.5 (this is the current version)
+
+=over 4
+
+=item
+
+The AS tag were introduced. Every plaform should now contain an englobing AS
+tag.
+
+=item
+
+Routes are now symmetric by default.
+
+=item
+
+Several tags were renamed (for sake of XML sanity):
+
+ LINK:CTN -> LINK_CTN
+ TRACE:CONNECT -> TRACE_CONNECT
+
+=back
+
+=back
+
+=head1 AUTHORS
+
+ The SimGrid team (simgrid-devel@lists.gforge.inria.fr)
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright (c) 2006-2014. The SimGrid Team. All rights reserved.
+
+This program is free software; you may redistribute it and/or modify it
+under the terms of GNU LGPL (v2.1) license.
+
+=cut
+