Note: This tutorial is based on Html Validator version 0.8.5.2. The details outlined below may not work in future versions.

When I make web sites, I use quite a few different Firefox extensions.

One of the extensions that I use is called Html Validator https://addons.mozilla.org/en-US/firefox/addon/249

This extension is great.
It main use is to validator the html code when you "view source" in Firefox.
It also has secondary benefit is syntax highlighting.

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