strong>-source</strong></span> file will be lost if
                 the system crashes.
            </p>
            <p>
                 The <span class="bold"><strong>-source</strong></span> file must already exist
                 (but may be zero-length) when <span class="bold"><strong>berkdb
                 open</strong></span> is called.
            </p>
            <p>
                 It is not an error to specify a read-only <span class="bold"><strong>-source</strong></span> file when creating a 