Thread:Support/About Wikia:Action-toplists-create-edit-list/en/reply

The extension is a very old piece of code. I am not sure whether this message is actually used anywhere. Anyway, it seems to have the same content as right-toplists-create-edit-list which is a name of a MediaWiki's user right. My guess would be then, that this simply describes an user's action in a direct, imperative manner.