$NXTVOL

   The Next Volume service allows you to process the next tape
   volume in a multiple volume set. This service applies only to
   files on magnetic tape volumes.

                        RAB64 USERS (ALPHA ONLY)

      On Alpha systems, RAB64 can replace the RAB or RAB prefix
      wherever it is used with the Next Volume service on OpenVMS
      Alpha systems.

   Format

     SYS$NXTVOL  rab [,[err] [,suc]]
 

Additional information available:

Returns         Arguments       Condition_Values_Returned