	<!ELEMENT fleet (ship)+>
	<!ELEMENT ship (class, crew, wl, description)>
	<!--<!ELEMENT ship (class|crew|wl|description)*>-->
	<!ELEMENT class ( #PCDATA ) >
	<!ATTLIST class size (small|medium|large) "medium">
	<!ELEMENT crew ( #PCDATA)>
	<!ELEMENT wl (w)+>
	<!ELEMENT w ( #PCDATA )>
	<!ELEMENT description ( #PCDATA ) >
	<!ENTITY tie_fighter "&lt;-|-&gt;">
	<!ENTITY me "ernie">