Unordered Lists
An unordered list is a list of items. The list items are marked with bullets (typically small black circles).

An unordered list starts with the <ul> tag. Each list item starts with the <li> tag.

<ul>
<li>Coffee</li>
<li>Milk</li>
</ul>

Here is how it looks in a browser:

Coffee
Milk
Inside a list item you can put paragraphs, line breaks, images, links, other lists, etc.

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Ordered Lists
An ordered list is also a list of items. The list items are marked with numbers.

An ordered list starts with the <ol> tag. Each list item starts with the <li> tag.

<ol>
<li>Coffee</li>
<li>Milk</li>
</ol>

Inside a list item you can put paragraphs, line breaks, images, links, other lists, etc.

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Definition Lists
A definition list is not a list of items. This is a list of terms and explanation of the terms.

A definition list starts with the <dl> tag. Each definition-list term starts with the <dt> tag. Each definition-list definition starts with the <dd> tag.

<dl>
<dt>Coffee</dt>
<dd>Black hot drink</dd>
<dt>Milk</dt>
<dd>White cold drink</dd>
</dl>