Note that to disable a sidebar for a [[SubPage]] of a page that has a sidebar,
you can create a sidebar page that is completely empty. This will turn off
the sidebar altogether.
+
+Warning: Any change to the sidebar will cause a rebuild of the whole wiki,
+since every page includes a copy that has to be updates. This can
+especially be a problem if the sidebar includes [[inline]] or [[map]]
+directives, since any changes to pages inlined or mapped onto the sidebar
+will change the sidebar and cause a full wiki rebuild.