Inside <insurance> information about a certain (diving) insurance is given. The element may occur any times.
                    It must be given at least one time, if
                    <diveinsurances> is given.
                
                    (see also <owner>, and <buddy>)
                
<insurance>
    <name>my-easy-dive-insurance</name>
    <issuedate>
        <date>
            <year>2002</year
            <month>1</month>
            <day>29</day>
            <dayofweek>2</dayofweek>              <!-- Tuesday -->
        </date>
    </issuedate>
</insurance>