This vector demonstrates Shazzer's new placeholder "notfound", you can use this when you want to perform a HTML fuzz and log every time the element isn't found.
<$[data1]><notfound><frameset><notfound><iframe><notfound><noembed><notfound><noframes><notfound><script><notfound><select><notfound><style><notfound><template><notfound><textarea><notfound><title><notfound><xmp><notfound>