Is there anything special about the new HTML5 menu item?

Question

I launched my site through the W3C validator for HTML 5, which is still experimental, I know. I received this warning, although I really do not understand:

The menu item is not yet supported by browsers. It would probably be better to wait for the implementations.

I am confused why this warning exists. What exactly needs to be "implemented" in the browser? As far as I know, the <menu> element was just another element of better semantic meaning, which was basically equivalent to the <div> element. Did I miss something? Is there anything special that browsers should do with this element?

Answer 1

The menu tag is designed to contain “commands” (see What is the HTML5 <command> tag and what browser support is ). This is the functionality of a team that has not yet been widely implemented.

It can be implemented through the context menu, through an additional menu in the browser, or something else.

Here is more detailed information: http://www.html5laboratory.com/by-your-command.php