Enable HTML5 tags on Eclipse

I really love Eclipse (PDT)... But i'm developing sites using HTML5 and CSS3 and it mark the HTML5 tags like <nav>, <section> and <article> as invalid tags (inexistent).

How can I add those new tags to it?

And what about CSS3 rules?

I read something about remove the "invalid tag" check... and that's not what I want. :(


Not much info is available in the Zend site as regarding HTML5, so it's unclear whether they truly support it.

From examining the Zend Framework source file Doctype.php, it seems that the DOCTYPE should be declared as simply <!DOCTYPE html> in order to support HTML5, which is the correct format according to the HTML5 specification.

The error might also come from an HTML validator that you have installed.
In this case, you might be able to adjust its preferences.

I also hope that you have installed the latest Eclipse PHP Development Tools.