Description

   Your symbiont must call SMB$INITIALIZE before calling any
   other SMB routines. It calls SMB$INITIALIZE in order to do the
   following:

   o  Allocate and initialize the SMB facility's internal database.

   o  Establish the interface between the job controller and the
      symbiont.

   o  Determine the threading scheme of the symbiont.

   o  Set up the mechanism to wake your symbiont when a message is
      received.

   After the symbiont calls SMB$INITIALIZE, it can communicate with
   the job controller using the other SMB routines.