In addition to being able to specify that all instances of a Topic Type are allowed to be used in scopes (using the Scoping Facet as described above), NPCL allows you to specify that certain specific topics can be used in scopes (even if their Topic Type does not allow it). This is achieved by adding the special NPCL type "Scoping Topic" to the types for the topic(s) that can be used in a scope. In general we recommend that you only use this feature for controlled lists of scoping topics.