html

Element Information

Model

head , body
Children: body, head

Attributes

QName Type Fixed Default Use Inheritable Annotation
dir restriction of xs:token optional
id xs:ID optional
lang LanguageCode optional
xml:lang union of(xs:language, restriction of xs:string) optional 
Attempting to install the relevant ISO 2- and 3-letter
         codes as the enumerated possible values is probably never
         going to be a realistic possibility.  See
         RFC 3066 at http://www.ietf.org/rfc/rfc3066.txt and the IANA registry
         at http://www.iana.org/assignments/lang-tag-apps.htm for
         further information.

         The union allows for the 'un-declaration' of xml:lang with
         the empty string.

Source 

<xs:element name="html">
  <xs:complexType>
    <xs:sequence>
      <xs:element ref="head"/>
      <xs:element ref="body"/>
    </xs:sequence>
    <xs:attributeGroup ref="i18n"/>
    <xs:attribute name="id" type="xs:ID"/>
  </xs:complexType>
</xs:element>

Sample