For all purposes of defining situation features that require values to be conferred on the properties of nodes, such situation features may be described in terms of whole assertions, or in terms of specific nodes and arcs, or both. In any case, however, for a given node, a situation feature is always fundamentally describable as the given node's service as the endpoints of some set of paths whose characteristics are defined by the TM Application as constituting a situation feature that requires values to be conferred.

Belongs in TM Application section (parid0269)