rem: if (this.drawn) { this.clear(); 
add: if (!OpenLayers.Tile.prototype.draw.apply(this, arguments)) { return false; 
context:     draw:function() {        if (this.drawn) {            this.clear();        }        OpenLayers.Tile.prototype.draw.apply(this, arguments);        if (this.layer.displayOutsideMaxExtent || (this.layer.maxExtent &&             this.layer.maxExtent.intersectsBounds(this.bounds, false))) {             this.loadFeaturesForRegion(this.requestSuccess);        }             },
meta: 8310	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8310/7e9eef8d075fa88068923404fa67c84bba79643e/WFS.js/buggy/lib/OpenLayers/Tile/WFS.js