Argument

 

context

   OpenVMS usage:context
   type:         longword (unsigned)
   access:       write only
   mechanism:    by reference
   Value identifying the data stream that DCX$COMPRESS_DONE deletes.
   The context argument is the address of a longword containing
   this value. DCX$COMPRESS_INIT writes the value into the context
   argument; you should not modify its value. You can define
   multiple context arguments to identify multiple data streams
   that are processed simultaneously.