http://www.w3.org/2001/06/grammar
element grammar

Model

<grammar  (any attribute from any namespace)>
(any element from any namespace)* mixed with character data
</grammar>

Disallowed substitutions (block)

none (extensions, restrictions and substitutions are allowed)

Substitution group exclusion (final)

none (extensions and restrictions are allowed)

Content Type

declared with type grammar
mixed content, not nillable.

Usage

This element can be the root element of XML instance documents.