Use the CLEAR LOGGING command to remove logging parameters from the
 volatile database on the executor node.  Use the PURGE LOGGING command
 to remove logging parameters from the permanent database on the executor
 node.

 CLEAR   KNOWN LOGGING           ALL
         LOGGING CONSOLE         EVENTS event-list
         LOGGING FILE            KNOWN EVENTS
         LOGGING MONITOR         AREA area-number
                                 CIRCUIT circuit-id
                                 LINE line-id
                                 MODULE name
                                 NAME
                                 NODE node-id
                                 SINK    EXECUTOR
                                         NODE node-id

 All underscores found in parameters must be replaced with spaces
 when parameters are used in NCP commands.