<?xml version="1.0"?>
<!DOCTYPE student [
	<!ELEMENT student (#PCDATA)>
	<!ATTLIST student
		first CDATA #REQUIRED
		middle CDATA #IMPLIED
		last CDATA #REQUIRED > 
	<!ENTITY myfirst "Snow">
	<!ENTITY mymiddle "Y">
	<!ENTITY mylast "&myfirst; Man">
]>
<!-- testing AttValue with a reference in double quote -->
<student first="&myfirst;" last="mylast;">My Name is &mylast;. </student>

