Except for the restrictions on the subjects of nodes that have special functions within assertion subgraphs (see [parid0185] 3.6.2.2), TM Applications are free to define "situation features" (features of the situations of nodes) and how those features, when they occur, affect the values of the properties of the nodes whose situations include those situation features. The values of all properties can be affected by such situation features, including both Subject Identity Discriminating Propertes (SIDPs) and Other Properties (OPs), in accordance with the specifications provided in the definition of the TM Application that defines the properties and the situation features (see [parid0253] 4.7.2.2).

Since the subjects that cannot be changed are known, simpler just
to state them. Likewise, if it is "any property" that can be affected by
a situation feature, just state that as well.