           directory, while preserving any user extensions in the
            <span class="code">bin/user</span> directory
        </li>
        <li>Save a copy of the old <span class="code">weewx.conf</span> as
            <span class='code'>weewx.conf.YYYYMMDDHHMMSS</span>
        </li>
        <li>Merge any changes made to the old configuration file
            <span class="code">weewx.conf</span> into the new configuration
            file, then install the merged copy. This effectively causes any
     