Worst-case scenario: the UEd Goblin wipes the map and burns down your house.
Template:Category implementing classes/doc
From Unreal Wiki, The Unreal Engine Documentation Site
This template defines the content of category pages for classes implementing a specific interface.
Usage
For stock class categories implementing stock interfaces:
{{category implementing classes|SomeInterface|Unreal Tournament 3|UE3}}
If the interface extends another stock interface: (other than "Interface" itself)
{{category implementing classes|SomeInterface|Unreal Tournament 3|UE3|parent=ParentInterface}}
For custom class categories implementing stock interfaces:
{{category implementing classes|SomeInterface|Unreal Tournament 3|UE3|custom=yes}}
For custom class categories implementing custom interfaces:
{{category implementing classes|SomeCustomInterface|Unreal Tournament 3|UE3|custom=interface}}
If the custom interface extends another interface implemented by custom classes:
{{category implementing classes|SomeCustomInterface|Unreal Tournament 3|UE3|custom=interface|customparent=CustomParentInterface}}