| #### Filter Subject Identity A filter is associated with one filter subject, which denotes to whom the filter applies. The filter subject is the client of the distributed application who caused the event to happen. The filter subject has two parts: the filter type and the key. There are eight filter types: · principal - DCE principal in the local cell. · foreign_principal - DCE principal in a foreign cell. · group - DCE group in the local cell. · foreign_group - DCE group in a foreign cell. · cell - DCE cell in the network. · cell_overridable - DCE cell in the network. This type can be overridden by a more specific filter type. · world - All clients of the distributed application. · world_overridable - All clients of the distributed application. This type can be overridden by a more specific filter type. The key is the specific name of the principal, foreign_principal, group, foreign_group, cell, and cell_overridable filter types. The world and world_overridable filter types have no keys. ####