1) Checking for "rolled up" window 2) Code optimization 3) Clearing source git-svn-id: svn://kolibrios.org@2076 a494cfbc-eb01-0410-851d-a64ba20cac60
git-svn-id: svn://kolibrios.org@1863 a494cfbc-eb01-0410-851d-a64ba20cac60