+ * "swfcombine file.swf -s 200 box1=file1.swf" doesn't work if file1.swf contains sprites
+ * "swfcombine file.swf -x 200 -y 200 -s 200 box1=file1.swf" doesn't work?
+ * Handle Bounding boxes
+ * support for centering (remove need to set -x,-y parameters manually when linking
+ preloaders)