How to force IE10 to render page in IE9 document mode

Question

I have two questions:

1. How can I force IE10 to render in IE9 document mode? Currently it\'s rendering my page in Standard document mode.

2. In I

Answer 1

By what this says, IE10 (the article is referred to a preview release, anyway) it's able to use X-UA-Compatible only if the document is in quirks mode (no DOCTYPE), otherwise IE10 won't react to the request.

Here's an excerpt:

Thus, to make IE10 react to the X-UA-Compatible directive, one must either create a page that triggers quirks-mode per the rules of HTML5 (that is: an a page with no doctype). One can also send the directive as a HTTP header, however: A HTTP sent directive appears to have no effect if you use it to downgrade the rendering — it can only be used to upgrade the rendering

So, you've to do it manually with Dvelopers Tools, or with quirks mode (but I suggest to stay in IE10 mode which is for the first time aligned to the other browers' standard)

EDIT: The follows are some useful link to read:

http://msdn.microsoft.com/en-us/library/cc288325(v=vs.85).aspx

http://msdn.microsoft.com/en-us/library/jj676915(v=vs.85).aspx

http://blogs.msdn.com/b/ie/archive/2011/12/14/interoperable-html5-quirks-mode-in-ie10.aspx