evaluation data/mark/chapters/41_Mark_15/paula_struct.dtd

<!ENTITY % paula_header SYSTEM "paula_header.dtd">
%paula_header;

<!ELEMENT structList (struct*)>
<!ATTLIST structList xmlns:xlink CDATA #IMPLIED
		     xml:base    CDATA #IMPLIED
		     type        CDATA #REQUIRED
>
                     
<!ELEMENT struct (rel*)>
<!ATTLIST struct id ID #REQUIRED>

<!ELEMENT rel EMPTY>
<!ATTLIST rel id          ID    #IMPLIED
              xlink:href  CDATA #REQUIRED
	      xmlns:xlink CDATA #IMPLIED
              type        (edge|secedge) #IMPLIED
>