

<!-- tests ANY and EMPTY content -->
<!doctype entity1 
[  
<!element entity1 ANY> 
<!element entity2 ANY>
<!element entity3 EMPTY> ]>
<!element entity4 (entity5 | entity6)*>

<entity1> This is an entity <entity2>
<entity3 /> <entity3> </entity3>
<entity4/>
<And another one </entity2> </entity1>
