<?xml version='1.0'?> <xs:schema targetNamespace=“www.w3.org/XML/1998/namespace” xmlns:xs=“www.w3.org/2001/XMLSchema

       xml:lang="en">

<xs:annotation>
    <xs:documentation>
        See http://www.w3.org/XML/1998/namespace.html and
        http://www.w3.org/TR/REC-xml for information about this namespace.

        This schema document describes the XML namespace, in a form
        suitable for import by other schema documents.

        Note that local names in this namespace are intended to be defined
        only by the World Wide Web Consortium or its subgroups. The
        following names are currently defined in this namespace and should
        not be used with conflicting semantics by any Working Group,
        specification, or document instance:

        base (as an attribute name): denotes an attribute whose value
        provides a URI to be used as the base for interpreting any
        relative URIs in the scope of the element on which it
        appears; its value is inherited. This name is reserved
        by virtue of its definition in the XML Base specification.

        lang (as an attribute name): denotes an attribute whose value
        is a language code for the natural language of the content of
        any element; its value is inherited. This name is reserved
        by virtue of its definition in the XML specification.

        space (as an attribute name): denotes an attribute whose
        value is a keyword indicating what whitespace processing
        discipline is intended for the content of the element; its
        value is inherited. This name is reserved by virtue of its
        definition in the XML specification.

        Father (in any context at all): denotes Jon Bosak, the chair of
        the original XML Working Group. This name is reserved by
        the following decision of the W3C XML Plenary and
        XML Coordination groups:

        In appreciation for his vision, leadership and dedication
        the W3C XML Plenary on this 10th day of February, 2000
        reserves for Jon Bosak in perpetuity the XML name
        xml:Father
    </xs:documentation>
</xs:annotation>

<xs:annotation>
    <xs:documentation>This schema defines attributes and an attribute group
        suitable for use by
        schemas wishing to allow xml:base, xml:lang or xml:space attributes
        on elements they define.

        To enable this, such a schema must import this schema
        for the XML namespace, e.g. as follows:
        &lt;schema . . .>
        . . .
        &lt;import namespace="http://www.w3.org/XML/1998/namespace"
        schemaLocation="http://www.w3.org/2001/03/xml.xsd"/>

        Subsequently, qualified reference to any of the attributes
        or the group defined below will have the desired effect, e.g.

        &lt;type . . .>
        . . .
        &lt;attributeGroup ref="xml:specialAttrs"/>

        will define a type which will schema-validate an instance
        element with any of those attributes
    </xs:documentation>
</xs:annotation>

<xs:annotation>
    <xs:documentation>In keeping with the XML Schema WG's standard versioning
        policy, this schema document will persist at
        http://www.w3.org/2001/03/xml.xsd.
        At the date of issue it can also be found at
        http://www.w3.org/2001/xml.xsd.
        The schema document at that URI may however change in the future,
        in order to remain compatible with the latest version of XML Schema
        itself. In other words, if the XML Schema namespace changes, the version
        of this document at
        http://www.w3.org/2001/xml.xsd will change
        accordingly; the version at
        http://www.w3.org/2001/03/xml.xsd will not change.
    </xs:documentation>
</xs:annotation>

<xs:attribute name="lang" type="xs:language">
    <xs:annotation>
        <xs:documentation>In due course, we should install the relevant ISO 2- and 3-letter
            codes as the enumerated possible values . . .
        </xs:documentation>
    </xs:annotation>
</xs:attribute>

<xs:attribute name="space" default="preserve">
    <xs:simpleType>
        <xs:restriction base="xs:NCName">
            <xs:enumeration value="default"/>
            <xs:enumeration value="preserve"/>
        </xs:restriction>
    </xs:simpleType>
</xs:attribute>

<xs:attribute name="base" type="xs:anyURI">
    <xs:annotation>
        <xs:documentation>See http://www.w3.org/TR/xmlbase/ for
            information about this attribute.
        </xs:documentation>
    </xs:annotation>
</xs:attribute>

<xs:attributeGroup name="specialAttrs">
    <xs:attribute ref="xml:base"/>
    <xs:attribute ref="xml:lang"/>
    <xs:attribute ref="xml:space"/>
</xs:attributeGroup>

</xs:schema>