<?xml encoding="US-ASCII"?>
<!ENTITY % blocksEntity SYSTEM "blocks.ent">
%blocksEntity;
<!ELEMENT s1 (s2 | %blocks;)*>
<!ELEMENT s2 (s3 | %blocks;)*>
<!ELEMENT s3 (s4 | %blocks;)*>
<!ELEMENT s4 (%blocks;)*>
<!ATTLIST s1
	title CDATA #REQUIRED
>
<!ATTLIST s2
	title CDATA #REQUIRED
>
<!ATTLIST s3
	title CDATA #REQUIRED
>
<!ATTLIST s4
	title CDATA #REQUIRED
>
<!-- CVS $Revision: 1.2 $ $Date: 2002/01/14 10:13:24 $ -->
