For the instance files to validate, your schema needs to define where
xml:* attributes are permitted.
In order to reference xml:lang, etc., in your schema, you have to import
the following W3C namespace:
<xs:import namespace="http://www.w3.org/XML/1998/namespace"
schemaLocation="http://www.w3.org/2001/xml.xsd"/>
where the world's most famous attributeGroup is defined:
<xs:attributeGroup name="specialAttrs">
<xs:attribute ref="xml:base"/>
<xs:attribute ref="xml:lang"/>
<xs:attribute ref="xml:space"/>
</xs:attributeGroup>
using the W3C-reserved namespace prefix: xml
In order for instance files referencing your schema to use xml:lang they
must include the W3C's xsi namespace but the associated target schema is
yours, e.g.
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://yourTargetSchema/namespace
optionally/yourLocalschema.xsd"
What could be simpler?
Also try this list: <>
Cheers
Jack Lindsey
