+* Things that will change in upcoming version 5 (TODO):
+ - The following tags will be removed:
+ - <include> spits an error since v3.18
+ - <random> does nothing since a very long time
+ - <as>, <asroute>, <bypassZoneRoute> and <process>, deprecated in DTD4.1
+
+* New in DTD version 4.1 (in SimGrid 3.16): backward compatible change (v4 files are valid v4.1 files)
+ - <zone> can be used as a synonym for the now deprecated <as>
+ - <zoneRoute> can be used as a synonym for the now deprecated <asroute>
+ - <bypassZoneRoute> an be used as a synonym for the now deprecated <bypassAsRoute>
+ - <actor> can be used as a synonym for the now deprecated <process>
+