Library /sys$common/syshlp/ncphelp.hlb CLEAR, MODULE, X25-PROTOCOL, KNOWN_DTES, CLEAR TIMER  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 If used with the CLEAR command, resets the clear timer in the
 volatile database to its default value.  If used with the PURGE
 command, resets the clear timer in the permanent database to
 prevent retransmission of a request to clear a virtual circuit.