showdownjs/test/functional/makehtml/cases/standard/ordered-list-starting-number.html

<ol start="5">
    <li>foo</li>
    <li>bar</li>
    <li>baz</li>
</ol>
<hr />
<ol start="3">
    <li>a</li>
    <li>b</li>
    <li>c</li>
    <li>d</li>
</ol>