HTML - (Tree|Nested) List

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A List inside a list

See also the related ARIA tree role

Articles Related

Example

<ul>
    <li>Nested List
         <ul>
             <li>Element</li>
             <li>Element</li>
             <li>Element</li>
         </ul>
    </li>
    <li>Element</li>
    <li>Element</li>
</ul>