Ends a transaction by aborting it.

    Format

      SYS$ABORT_TRANS  [efn] ,[flags] ,iosb [,[astadr] ,[astprm]

                       ,[tid] ,[reason] ,[bid]]

    C Prototype

      int sys$abort_trans  (unsigned int efn, unsigned int flags,

                           struct _iosb *iosb,...);