<!ELEMENT systemCore (worldDatabase, userDatabase, transformationManager, eventManager?)>
<!ATTLIST systemCore
	version (1.0a4) #REQUIRED>

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

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

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

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