For bootstrapping reasons, TM Applications must define at least some nodes to be present in all topic map graphs that contain nodes that are governed by the TM Application, regardless of whether they appear explicitly in any interchangeable topic map governed by that TM Application. Such nodes are called "built-in" nodes, and they must be defined as having "built-in values" for at least one of their SIDPs.

discuss TM Applications in TM Applications (parid0269)