Returns

   OpenVMS usage:cond_value
   type:         longword (unsigned)
   access:       write only
   mechanism:    by immediate value

   Longword value returned as a status code. It is generally a
   success code, because all OpenVMS RMS errors should be signaled.
   The signal should include the file name and both longwords of the
   RMS status. Any errors detected within work I/O can be indicated
   by setting status to an error code, which will be returned by the
   EDT$EDIT routine.

   The condition value is returned in R0.