HTML 5 meta restrictions

First of all, to whoever reads this: thank you for providing such a  
wonderful and invaluable tool. I try my best to have all my sites  
validate and and I can't imagine how I'd manage to do it otherwise -  
IE is already a horror and without the W3C Validator... well, you can  

Anyway, I'm completing a site - the development version is up at 
  (likely by the time you read this, it will be up at 
) and I have just two errors, as follows:

  Line 16, Column 42: Bad value cleartype for attribute http-equiv on  
element meta.
<meta http-equiv="cleartype" content="on">

Line 17, Column 63: Bad value X-UA-Compatible for attribute http-equiv  
on element meta.
<meta http-equiv="X-UA-Compatible" content="IE=edge, chrome=1">
A quick search found the following thread, where the issue is  
discussed in detail - bottom line here is that these declarations do a  
lot to improve performance for mobile web and to provide better  
support for IE users. I am far from an expert here, but I think you  
should take this into consideration in your HTML 5 spec, which you do  
say is still in an experimental state.
Thank you for all the work you do; I'm looking forward to seeing  
"green" again on my HTML sites - it always makes my day! Keep up the  
good work... we can't do it without you...

Billy James Cobin

Creative Director - InterCreative Media
tel: 212-787-7767
fax: 212.362.8427

Received on Sunday, 1 April 2012 12:23:30 UTC