2.4.8.4.2 Search Activity List (SAL)

The Search Activity List is a node that is identified by a special NID value of NID_SEARCH_ACTIVITY_LIST (0x201), which contains a simple array of NIDs (not a queue). Each NID in the SAL corresponds to the NID of a Folder object that has an associated search Folder object. Implementations SHOULD NOT modify the SAL.<18>