'ChangesListSpecialPageStructuredFilters': Called to allow extensions to register
filters for pages inheriting from ChangesListSpecialPage (in core: RecentChanges,
RecentChangesLinked, and Watchlist). Generally, you will want to construct
-new ChangesListBooleanFilter or ChangesListStringOptionsFilter objects. You can
-then either add them to existing ChangesListFilterGroup objects (accessed through
-$special->getFilterGroup), or create your own. If you create new groups, you
-must register them with $special->registerFilterGroup.
+new ChangesListBooleanFilter or ChangesListStringOptionsFilter objects.
+
+When constructing them, you specify which group they belong to. You can reuse
+existing groups (accessed through $special->getFilterGroup), or create your own.
+If you create new groups, you must register them with $special->registerFilterGroup.
$special: ChangesListSpecialPage instance
'ChangeTagAfterDelete': Called after a change tag has been deleted (that is,