rem: this.drawn = false; 
context:     clear: function() {        this.drawn = false;    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/c28f13f88d7a25c8f5c3b8dbe5e1b22a896e5336/Tile.js/buggy/lib/OpenLayers/Tile.js