XML Schema - Schema annotation

Annotation is a human-readable note (comment) of a schema or its part.

It may contain the processing information (see example - xs:appinfo) as well.

Next content is not specified (limited) - see example (bind, class, ...)

Example

<xs:annotation> 
 <xs:documentation xml:lang="en">Top level element.</xs:documentation>
 <xs:documentation xml:lang="fr">Element racine.</xs:documentation> 
 <xs:appinfo source="http://example.com/foo/"> 
   <bind xmlns="http://example.com/bar/"> 
    <class name="Book"/>
   </bind>
 </xs:appinfo> 
</xs:annotation>