Description

   Beginning in OpenVMS Version 7.3-2, a number of functional
   changes were made to SYS$ACM[W]. In the following descriptions
   of these changes, nonprivileged processes refer to processes
   running in user mode that do not have SECURITY privilege.

   These changes are the following:

   o  Timeout processing

      Timeout processing is now enforced for nonprivileged
      processes. Othe processes can request time processing by
      specifying the ACME$M_TIMEOUT function modifier.

   o  Dialogue mode iteration limit

      Nonprivileged processes are now limited in the number of
      iterative requests they can make in a dialogue sequence of
      calls.