Single HTML tags

Some of the paired tags we've already met. But what are some of the single tags?

Pair tags are usually needed to mark up a fragment of text. With a pair of tags, you can specify the beginning and end of that fragment. But there are some tags that are not intended to be used to mark up fragment of text.

For example, a tag to insert an image or a tag to insert a separator bar. Such tags add a single object to the page, and they do not need to enclose any text to do so. That's why they are called single tags.

Examples of such tags are <br>, <hr>, <img>.

By the way, you will see such code fragments in the HTML editor: <!-- text -->. They are called "comments", and the browser does not display them on the page.