/sys$common/syshlp/helplib.hlb SET, HOST, /LAT, Qualifiers, /LOG  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /LOG[=log-file]

    Logs all data that is delivered during the LAT session. If you do
    not specify a log file, the data is stored in the file SETHOST_
    LAT.LOG.