so we can quickly tell whether the frame has an associated view git-svn-id: svn://10.0.0.236/trunk@59586 18797224-902f-48f8-a5cc-f745e15eee43
so we can quickly tell whether the frame has an associated view git-svn-id: svn://10.0.0.236/trunk@59586 18797224-902f-48f8-a5cc-f745e15eee43