<xbrl
        xmlns="http://www.xbrl.org/2003/instance"
        xmlns:mock="http://www.mock.com/mock"
        xmlns:link="http://www.xbrl.org/2003/linkbase"
        xmlns:xlink="http://www.w3.org/1999/xlink"
        title="Test∓"> <!-- CAUSE: disallowed character in attribute -->
     ÿ ⃏ ' " ₠ <!-- allowed characters -->
    <link:schemaRef
            xlink:href="mock-taxonomy.xsd"
            xlink:type="simple"/>
    <context id="ctx-1">
        ⃐ <!-- CAUSE: disallowed character in context -->
        <entity>
            <identifier scheme="http://www.kvk.nl/kvk-id">12345678и</identifier> <!-- CAUSE: disallowed character in identifier -->
        </entity>
        <period>
            <startDate>2021-01-01</startDate>
            <endDate>2021-12-31</endDate>
        </period>
    </context>
    <mock:String contextRef="ctx-1">
        FACT 1 и  <!-- CAUSE: disallowed character in fact value -->
    </mock:String>
    <mock:String contextRef="ctx-1">
        FACT 2
        <!-- й --> <!-- CAUSE: disallowed character in comment in fact value -->
    </mock:String>
    <mock:String contextRef="ctx-1">
        FACT 3 
    </mock:String>
</xbrl>
