The CLEAR EXECUTOR command resets to the default the value (if any)
 or removes selected local node parameters from the volatile database
 on the local node.  The PURGE EXECUTOR command removes selected local
 node parameters from the permanent database on the local node.

 You can not clear the BUFFER SIZE or STATE parameters from the volatile
 database.

 CLEAR   EXECUTOR        (parameters...)

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