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<?xml version='1.0'?> | ||
<!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN" "XMLSchema.dtd" > | ||
<xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en"> | ||
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<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. | ||
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This schema document describes the XML namespace, in a form | ||
suitable for import by other schema documents. | ||
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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: | ||
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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. | ||
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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. | ||
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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. | ||
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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: | ||
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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> | ||
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<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. | ||
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To enable this, such a schema must import this schema | ||
for the XML namespace, e.g. as follows: | ||
<schema . . .> | ||
. . . | ||
<import namespace="http://www.w3.org/XML/1998/namespace" | ||
schemaLocation="http://www.w3.org/2001/03/xml.xsd"/> | ||
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Subsequently, qualified reference to any of the attributes | ||
or the group defined below will have the desired effect, e.g. | ||
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<type . . .> | ||
. . . | ||
<attributeGroup ref="xml:specialAttrs"/> | ||
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will define a type which will schema-validate an instance | ||
element with any of those attributes</xs:documentation> | ||
</xs:annotation> | ||
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<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> | ||
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<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> | ||
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<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> | ||
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<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> | ||
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<xs:attributeGroup name="specialAttrs"> | ||
<xs:attribute ref="xml:base"/> | ||
<xs:attribute ref="xml:lang"/> | ||
<xs:attribute ref="xml:space"/> | ||
</xs:attributeGroup> | ||
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</xs:schema> |