$FLUSH

   The Flush service writes out all modified I/O buffers and file
   attributes associated with the file. This ensures that all record
   activity up to the point at which the Flush service executes is
   actually reflected in the file.

                        RAB64 USERS (ALPHA ONLY)

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

   Format

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

Additional information available:

Returns         Arguments       Condition_Values_Returned