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

       /LOCK_STATE
       /NOLOCK_STATE

    Retains the state specified by the /SET_STATE qualifier until
    you use the /SET_STATE qualifier again to change it. The default
    qualifier is /NOLOCK_STATE.

    States are used to increase the number of key definitions
    available on your terminal. The same key can be assigned any
    number of definitions as long as each definition is associated
    with a different state. State names can be any alphanumeric
    string.