Changes
#Define the required Metaproperties for the [[SYSCLS_MAPOVERLAY | MapOverlays]]<br/>
#* HowTo: [[HowTo:Create_a_new_MetaProperty | Create a new MetaProperty]]
#Add the required [[Metaproperty | MetaProperty]] to the [[MetaClass| Meta Class]].<br/>
#* HowTo: [[HowTo:Add_a_MetaProperty_to_a_MetaClass | Add a Metaproperty to a Metaclass]]