Sample (simplified) Tree

Classic simplified tree diagram of the limerick
	    Warp Speed, Ms Bright! that uses a dashed
	    curved arrow to represent the link from the note
	    to the term, and a dotted arror to indicate the
	    link from the ptr to the Wikipedia article. It is
	      simplified because it does not
	    contain attribute (or text) nodes, and is missing an
A Hurried Introduction to XML, slide 13 of 24