<xs:element name="title" type="xlink:titleEltType" abstract="true"/>

<xs:element name="resource" type="xlink:resourceType" abstract="true"/>

<xlink:locator xlink:href="" xlink:label="" xlink:role="" xlink:title="" xlink:type="locator">
  <xlink:title xml:lang="" xlink:type="title">{0,unbounded}</xlink:title>
</xlink:locator>

<xs:element name="locator" type="xlink:locatorType" abstract="true"/>

<xlink:arc xlink:actuate="" xlink:arcrole="" xlink:from="" xlink:show="" xlink:title="" xlink:to="" xlink:type="arc">
  <xlink:title xml:lang="" xlink:type="title">{0,unbounded}</xlink:title>
</xlink:arc>

<xs:element name="arc" type="xlink:arcType" abstract="true"/>

<xs:simpleType name="typeType">
  <xs:restriction base="xs:token">
    <xs:enumeration value="simple"/>
    <xs:enumeration value="extended"/>
    <xs:enumeration value="title"/>
    <xs:enumeration value="resource"/>
    <xs:enumeration value="locator"/>
    <xs:enumeration value="arc"/>
  </xs:restriction>
</xs:simpleType>

<xs:simpleType name="hrefType">
  <xs:restriction base="xs:anyURI"/>
</xs:simpleType>

<xs:simpleType name="roleType">
  <xs:restriction base="xs:anyURI">
    <xs:minLength value="1"/>
  </xs:restriction>
</xs:simpleType>

<xs:simpleType name="arcroleType">
  <xs:restriction base="xs:anyURI">
    <xs:minLength value="1"/>
  </xs:restriction>
</xs:simpleType>

<xs:simpleType name="titleAttrType">
  <xs:restriction base="xs:string"/>
</xs:simpleType>

<xs:simpleType name="showType">
  <xs:restriction base="xs:token">
    <xs:enumeration value="new"/>
    <xs:enumeration value="replace"/>
    <xs:enumeration value="embed"/>
    <xs:enumeration value="other"/>
    <xs:enumeration value="none"/>
  </xs:restriction>
</xs:simpleType>

<xs:simpleType name="actuateType">
  <xs:restriction base="xs:token">
    <xs:enumeration value="onLoad"/>
    <xs:enumeration value="onRequest"/>
    <xs:enumeration value="other"/>
    <xs:enumeration value="none"/>
  </xs:restriction>
</xs:simpleType>

<xs:simpleType name="labelType">
  <xs:restriction base="xs:NCName"/>
</xs:simpleType>

<xs:simpleType name="fromType">
  <xs:restriction base="xs:NCName"/>
</xs:simpleType>

<xs:simpleType name="toType">
  <xs:restriction base="xs:NCName"/>
</xs:simpleType>

<xs:complexType mixed="true" name="simple">
  <xs:annotation>
    <xs:documentation>Intended for use as the type of user-declared elements to make them
    simple links.</xs:documentation>
  </xs:annotation>
  <xs:group ref="xlink:simpleModel"/>
  <xs:attributeGroup ref="xlink:simpleAttrs"/>
</xs:complexType>

<xs:complexType mixed="true" name="titleEltType">
  <xs:group ref="xlink:titleModel"/>
  <xs:attributeGroup ref="xlink:titleAttrs"/>
</xs:complexType>

<xs:complexType mixed="true" name="resourceType">
  <xs:group ref="xlink:resourceModel"/>
  <xs:attributeGroup ref="xlink:resourceAttrs"/>
</xs:complexType>

<xs:complexType name="locatorType">
  <xs:group ref="xlink:locatorModel"/>
  <xs:attributeGroup ref="xlink:locatorAttrs"/>
</xs:complexType>

<xs:complexType name="arcType">
  <xs:group ref="xlink:arcModel"/>
  <xs:attributeGroup ref="xlink:arcAttrs"/>
</xs:complexType>

<xs:complexType name="extended">
  <xs:annotation>
    <xs:documentation>Intended for use as the type of user-declared elements to make them
    extended links.
    Note that the elements referenced in the content model are all abstract.
    The intention is that by simply declaring elements with these as their
    substitutionGroup, all the right things will happen.</xs:documentation>
  </xs:annotation>
  <xs:group ref="xlink:extendedModel" minOccurs="0" maxOccurs="unbounded"/>
  <xs:attributeGroup ref="xlink:extendedAttrs"/>
</xs:complexType>

<xs:attribute name="type" type="xlink:typeType"/>

<xs:attribute name="href" type="xlink:hrefType"/>

<xs:attribute name="role" type="xlink:roleType"/>

<xs:attribute name="arcrole" type="xlink:arcroleType"/>

<xs:attribute name="title" type="xlink:titleAttrType"/>

<xs:attribute name="show" type="xlink:showType"/>

<xs:attribute name="actuate" type="xlink:actuateType"/>

<xs:attribute name="label" type="xlink:labelType"/>

<xs:attribute name="from" type="xlink:fromType"/>

<xs:attribute name="to" type="xlink:toType"/>

<xs:group name="simpleModel">
  <xs:sequence>
    <xs:any processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
  </xs:sequence>
</xs:group>

<xs:group name="extendedModel">
  <xs:choice>
    <xs:element ref="xlink:title"/>
    <xs:element ref="xlink:resource"/>
    <xs:element ref="xlink:locator"/>
    <xs:element ref="xlink:arc"/>
  </xs:choice>
</xs:group>

<xs:group name="titleModel">
  <xs:sequence>
    <xs:any processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
  </xs:sequence>
</xs:group>

<xs:group name="resourceModel">
  <xs:sequence>
    <xs:any processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
  </xs:sequence>
</xs:group>

<xs:group name="locatorModel">
  <xs:sequence>
    <xs:element ref="xlink:title" minOccurs="0" maxOccurs="unbounded"/>
  </xs:sequence>
</xs:group>

<xs:group name="arcModel">
  <xs:sequence>
    <xs:element ref="xlink:title" minOccurs="0" maxOccurs="unbounded"/>
  </xs:sequence>
</xs:group>

<xs:attributeGroup name="simpleAttrs">
  <xs:attribute ref="xlink:type" fixed="simple"/>
  <xs:attribute ref="xlink:href"/>
  <xs:attribute ref="xlink:role"/>
  <xs:attribute ref="xlink:arcrole"/>
  <xs:attribute ref="xlink:title"/>
  <xs:attribute ref="xlink:show"/>
  <xs:attribute ref="xlink:actuate"/>
</xs:attributeGroup>

<xs:attributeGroup name="extendedAttrs">
  <xs:attribute ref="xlink:type" fixed="extended" use="required"/>
  <xs:attribute ref="xlink:role"/>
  <xs:attribute ref="xlink:title"/>
</xs:attributeGroup>

<xs:attributeGroup name="titleAttrs">
  <xs:attribute ref="xlink:type" fixed="title" use="required"/>
  <xs:attribute ref="xml:lang">
    <xs:annotation>
      <xs:documentation>xml:lang is not required, but provides much of the
     motivation for title elements in addition to attributes, and so
     is provided here for convenience.</xs:documentation>
    </xs:annotation>
  </xs:attribute>
</xs:attributeGroup>

<xs:attributeGroup name="resourceAttrs">
  <xs:attribute ref="xlink:type" fixed="resource" use="required"/>
  <xs:attribute ref="xlink:role"/>
  <xs:attribute ref="xlink:title"/>
  <xs:attribute ref="xlink:label"/>
</xs:attributeGroup>

<xs:attributeGroup name="locatorAttrs">
  <xs:attribute ref="xlink:type" fixed="locator" use="required"/>
  <xs:attribute ref="xlink:href" use="required"/>
  <xs:attribute ref="xlink:role"/>
  <xs:attribute ref="xlink:title"/>
  <xs:attribute ref="xlink:label">
    <xs:annotation>
      <xs:documentation>label is not required, but locators have no particular
     XLink function if they are not labeled.</xs:documentation>
    </xs:annotation>
  </xs:attribute>
</xs:attributeGroup>

<xs:attributeGroup name="arcAttrs">
  <xs:attribute ref="xlink:type" fixed="arc" use="required"/>
  <xs:attribute ref="xlink:arcrole"/>
  <xs:attribute ref="xlink:title"/>
  <xs:attribute ref="xlink:show"/>
  <xs:attribute ref="xlink:actuate"/>
  <xs:attribute ref="xlink:from"/>
  <xs:attribute ref="xlink:to">
    <xs:annotation>
      <xs:documentation>from and to have default behavior when values are missing</xs:documentation>
    </xs:annotation>
  </xs:attribute>
</xs:attributeGroup>