Library /sys$common/syshlp/acledt.hlb ENTER_KEY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Enter

    Indicates that the current ACE is complete. The ACL editor
    terminates the insertion and verifies that the syntax of the
    ACE is complete. You can press the Enter key while the cursor is
    located at any position within the ACE. (Pressing the Return key
    produces the same results.)