$ADD_BRANCHW

   Authorizes a new branch to be added to a transaction. $ADD_
   BRANCHW always waits for the request to complete before returning
   to the caller. Other than this, it is identical to $ADD_BRANCH.

   Format

     SYS$ADD_BRANCHW  [efn] ,[flags] ,iosb ,[astadr] ,[astprm] ,tid

                      ,tm_name ,bid

   C Prototype

     int sys$add_branchw  (unsigned int efn, unsigned int

                          flags, struct _iosb *iosb, void

                          (*astadr)(__unknown_params), int astprm,

                          unsigned int tid [4], void *tmname,

                          unsigned int bid [4]);