The PRMCEB privilege lets the user's process
create or delete a permanent common event flag cluster by executing
the Associate Common Event Flag Cluster ($ASCEFC) or the Delete Common
Event Flag Cluster ($DLCEFC) system service. Common event flag clusters
enable cooperating processes to communicate with each other and thus
synchronize their execution.
Grant this privilege with care. If permanent common
event flag clusters are not explicitly deleted, they tie up space
in system dynamic memory, which may degrade system performance.