Specification: http://dev.w3.org/html5/spec/Overview.html
Multipage: http://www.whatwg.org/C#top
Complete: http://www.whatwg.org/c#top

Comment:
How do I solve these errors?

# Error Line 2, Column 219: Attribute xmlns:b not allowed here.
…www.google.com/2005/gml/data'
xmlns:expr='http://www.google.com/2005/gml/expr'>
# Warning Line 2, Column 219: Attribute with the local name xmlns:b is not
serializable as XML 1.0.
…www.google.com/2005/gml/data'
xmlns:expr='http://www.google.com/2005/gml/expr'>
# Error Line 2, Column 219: Attribute xmlns:data not allowed here.
…www.google.com/2005/gml/data'
xmlns:expr='http://www.google.com/2005/gml/expr'>
# Warning Line 2, Column 219: Attribute with the local name xmlns:data is not
serializable as XML 1.0.
…www.google.com/2005/gml/data'
xmlns:expr='http://www.google.com/2005/gml/expr'>
# Error Line 2, Column 219: Attribute xmlns:expr not allowed here.
…www.google.com/2005/gml/data'
xmlns:expr='http://www.google.com/2005/gml/expr'>
# Warning Line 2, Column 219: Attribute with the local name xmlns:expr is not
serializable as XML 1.0.
…www.google.com/2005/gml/data'
xmlns:expr='http://www.google.com/2005/gml/expr'>
# Warning Line 2, Column 219: Attribute b:version is not serializable as XML
1.0.
…www.google.com/2005/gml/data'
xmlns:expr='http://www.google.com/2005/gml/expr'>
# Error Line 2, Column 219: Attribute b:version not allowed on element html at
this point.
…www.google.com/2005/gml/data'
xmlns:expr='http://www.google.com/2005/gml/expr'>
Attributes for element html:
    Global attributes
    manifest
# Error Line 7, Column 60: Bad value X-UA-Compatible for attribute http-equiv
on element meta.
<meta content='IE=EmulateIE7' http-equiv='X-UA-Compatible'/>
# Error Line 12, Column 55: Bad value MSSmartTagsPreventParsing for attribute
name on element meta: Keyword mssmarttagspreventparsing is not registered.
<meta content='true' name='MSSmartTagsPreventParsing'/>
Syntax of metadata name:
A metadata name listed in the HTML specification or listed in the WHATWG wiki.
You can register metadata names on the WHATWG wiki yourself. 
# Error Line 18, Column 162: Bad value service.post for attribute rel on
element link: Keyword service.post is not registered.
… Atom"
href="http://www.blogger.com/feeds/1618609168704936088/posts/default" />
Syntax of link type valid for <link>:
A whitespace-separated list of link types listed as allowed on <link> in the
HTML specification or listed as an allowed on <link> on the Microformats wiki
without duplicate keywords in the list. You can register link types on the
Microformats wiki yourself. 
# Error Line 750, Column 31: script element between head and body.
<script type='text/javascript'>
# Error Line 750, Column 31: Cannot recover after last error. Any further
errors will be ignored.
<script type='text/javascript'>

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