Library /sys$common/syshlp/dce$uaf_help.hlb DEFINE, /KEY, Qualifiers, /SET_STATE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /SET_STATE=state-name
       /NOSET_STATE (default)

    Causes the specified state name to be set when the key is
    pressed. (By default, the current locked state is reset when the key
    is pressed.) If you have not included this qualifier with a key
    definition, you can use the SET KEY command to change the
    current state. The state name can be any alphanumeric string; specify
    the state as a character string enclosed in quotation marks.