-Returns TRUE if it understands this node and can create
-a resource from it, FALSE otherwise.
+Returns true if it understands this node and can create
+a resource from it, false otherwise.
+
+\wxheading{Note}
+
+You must {\bf not} call any wxXmlResourceHandler methods except
+\helpref{IsOfClass}{wxxmlresourcehandlerisofclass} from this method! The instance
+is not yet initialized with node data at the time CanHandle is called and it is only
+safe to operate on {\it node} directly or to call IsOfClass.