<!ELEMENT worldDatabase (entityTypes*, tiles*, environmentLayout?)>
<!ATTLIST worldDatabase
	version (1.0a4) #REQUIRED>

<!ELEMENT entityTypes EMPTY>
<!ATTLIST entityTypes
	configFile CDATA #REQUIRED>

<!ELEMENT tiles EMPTY>
<!ATTLIST tiles
	configFile CDATA #REQUIRED>

<!ELEMENT environmentLayout EMPTY>
<!ATTLIST environmentLayout
	configFile CDATA #REQUIRED>