$SPACE

   The Space service lets you space (skip) a tape file forward or
   backward a specified number of blocks.

                        RAB64 USERS (ALPHA ONLY)

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

   Format

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

Additional information available:

Returns         Arguments       Condition_Values_Returned