HyperText Markup Language/Comments

HTML offers the possibility to insert comments into the page. To place a comment in your HTML code, start it with &lt;!-- and close it with --&gt;. An example:

Unlike notes in office suites, comments are completely ignored by browsers, so the readers of the page have no idea of their presence. They can be viewed in the source of the web page though.

You should avoid nested comments, as these can cause troubles to many browsers. An example: