readUBits          60 shell/swf.cpp  			int n = readUBits(5);
readUBits          61 shell/swf.cpp  			readUBits(n); // xmin
readUBits          62 shell/swf.cpp  			readUBits(n); // xmax
readUBits          63 shell/swf.cpp  			readUBits(n); // ymin
readUBits          64 shell/swf.cpp  			readUBits(n); // ymax
readUBits         107 shell/swf.cpp  			int num = readUBits(n);