The HLink module defined in this specification provides XHTML Family Members with the ability to specify which attributes of elements represent links, and how those links should be traversed, and extends XLink use to a wider class of languages than those restricted to the syntactic style allowed by XLink.
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1. IntroductionThis section is informative.
This document defines markup that can be used to describe links in XHTML Family members. It consists of two elements that are used to associate properties with markup elements and attributes to describe how they behave as links. Many of the descriptive properties are taken from XLink [XLINK], but with additions to support the behaviour of links in XHTML.
2. Definitions[TBD]
3. The HLink ModuleThis section is normative.
This specification defines a module called HLink. The module uses the XML Namespaces [NAME] identifier http://www.w3.org/2002/06/hlink.
Examples in this document that use the namespace prefix "hlink" all assume an xmlns declaration xmlns:hlink="http://www.w3.org/2002/06/hlink" somewhere suitable in the document involved. All examples are informative.
The remainder of this section describes the elements and attributes in this module, the semantics, and provides an abstract module definition as required in [XHTMLMOD].
The HLink Module supports the following element and attributes:
Element Attributes Minimal Content Model hlinks - hlink+ hlink namespace* (URI), element (NAME),Implementations: DTD, RELAX NG, XML Schema
3.1. The hlinks ElementThe hlinks element exists only to be a root element for a document containing only hlink elements; seesection 4 Usage, and the hlink:definition attribute defined there.
[[Issue: you could define inheritance in nested hlink elements:
<hlink namespace="...">
<hlink element="a" ... />
<hlink element="b" ... />
</hlink>
which would make writing descriptions easier, and make an outer hlinks elements unnecessary, though at the cost of slightly complicating implementation]]
Element hlink is used to identify an element and/or attributes within a namespace, and associate properties with them to specify how the element should be treated as a link, or how the attributes contribute to an element that is a link. The hlink element has the following attributes:
element attribute belongs to, or the other attributes when the element attribute is omitted.
namespace. The rest of the attributes below specify properties of this element. If this attribute is absent, then the attributes describe global attributes (as defined in [NAME]) within the namespace instead; these attributes then describe the element that they are actually on in the markup. If this attribute has the special value "*" then the rest of the attributes describe all suitable elements in the namespace (as defined by a DTD or schema); for instance, if the hlink element defines an attribute href for an element value of *, then all elements that the DTD allows to have an attribute href are so defined.
The remaining attributes come in two variants: one variant specifies a value that indicates how the element is to behave as a link-related element, and the other specifies the name of an attribute on the element being defined that supplies the value. For instance:
locatorValue="http://www.w3.org/"
says that the element in question is a locator for a fixed URI, namely http://www.w3.org/. On the other hand:
locator="href"
says that the element in question has an attribute named href, that contains the URI of the locator.
If both variants are used, then the attribute-name version takes precedence: if the named attribute (for instance locator) has a value, that value is used, otherwise the value attribute is used (in this case locatorValue).
As a shorthand, whenever this specification refers to a property, it means the final value via the combination of such a pair. For instance "if the effect property has the value replace" means "if the effect attribute refers to an attribute that has the value replace or the effectValue attribute has the value replace".
The properties are:
locator property is loaded in a new context. For instance in a windowing environment, the resource is loaded in a new window.
replacement property, is located, and the resource in that context is replaced by the resource identified by the locator property. If no such resource can be located, a new context with that name is created, initialised with the identified resource. If there is no replacement property then the initiating resource is replaced by the resource identified by the locator property.
locator property is considered to be embedded in the environment of the initiating resource. This includes images and other media resources, as well as such resources as scripts and style sheets.
[[Issue: define embed more precisely]]
[[More needs to be described here]]
[[Issue: is form submission linking?]]
locator property describes how the presentation of the current element is to be interpreted as a series of links to further resources.
[[More/better: this is here as a placeholder to describe XHTML's image maps]]
The default value is replace.
a element) may contain an image (for instance using XHTML's img element) that additionally has a link to a resource describing that image (such as XHTML's longdesc attribute). The primary actuation method must activate the a element; the secondary actuation method must allow the user to request activation of any of the other resources available at that point (for instance via a pop-up menu).
The default value is onRequest.
effect property has the value replace. If the effect property does not have that value, the replacement property is ignored.
This property gives information to the user agent about the role the link plays. [[More]]
[[These are the values that rel and rev can take according to HTML 4: Contents Glossary Copyright Chapter Section Subsection Appendix Help Bookmark Index Next Prev Alternate Start Stylesheet, and other specifications have added other values; e.g. P3P]]
In its simplest case, this is just a media type, such as "image/png" or "application/xml", but it may also contain asterisks, such as "image/*" or "*/*", or lists of acceptable media types, such as "image/png, image/gif, image/jpeg".
The user agent must combine this list it with its own list of acceptable media types by taking the intersection, and then use the resulting list as the field value of the accept request header when requesting the resource using HTTP.
For instance, if the property specifies the value "image/png, image/gif, image/jpeg", but the user agent does not accept images of type "image/gif" then the resultant accept header would contain "image/png, image/jpeg".
A user agent should imitate similar behavior when using other methods than HTTP. For instance, when accessing files in a local filestore, a contentType property of "image/png, image/jpeg" might cause the user agent first to look for a file with extension .png, and then for one with extension .jpg.
If this property is not present, "*/*" is used for its value.
effect property of embed and an actuate property of onLoad. It has two values:
(If the element has no children, these two values are equivalent)
The default value is ignoreChildren.
effect property of embed and an actuate property of onLoad cannot be actuated, either because of network failure or the resource not being available or found, or because the user agent cannot process the resource or the contentType property indicates that the user agent would not be able to process the resource. It has four possible values:
The default value is warn.
[[Issue: onSuccess and onFailure need more work to cover other onLoad cases]]
[[Issue: replace onSuccess/onFailure with fallback="..."?]]
[[Issue: markup for case where link has a side-effect needed?]]
3.3. Examples<a href="..."> element in XHTML:
<hlink namespace="http://www.w3.org/1999/xhtml"
element="a"
locator="href"
effectValue="replace"
actuateValue="onRequest"
replacement="target"/><img/> in XHTML
<hlink namespace="http://www.w3.org/1999/xhtml"
element="img"
locator="src"
effectValue="embed"
actuateValue="onLoad"
onFailureValue="warn"/>
<hlink namespace="http://www.w3.org/1999/xhtml"
element="img"
locator="longdesc"
effectValue="new"
actuateValue="onRequestSecondary"/>
<hlink namespace="http://www.w3.org/1999/xhtml"
element="img"
locator="usemap"
effectValue="map"
actuateValue="onLoad"/><object> in XHTML
<hlink namespace="http://www.w3.org/1999/xhtml"
element="object"
locator="data"
effectValue="embed"
actuateValue="onLoad"
onFailureValue="processChildren"
onSuccessValue="ignoreChildren"/><home/> element
<hlink namespace="http://www.example.com/markup"
element="home"
locatorValue="/"
effectValue="replace"
actuateValue="onRequest"/>
<hlink namespace="http://www.example.com/markup"
element="home"
locatorValue="/icons/home.png"
effectValue="embed"
actuateValue="onLoad"/>
In the context of this definition, and the namespace declaration
xmlns="http://www.example.com/markup"
the markup
<home/>
will display a clickable icon that takes the user to the home page.
<hlink namespace="http://www.example.com/markup"
element="redirect"
locator="href"
effectValue="replace"
actuateValue="onLoad"/>
In the context of this definition and a suitable namespace declaration, the following markup will cause the initiating resource to be redirected:
<redirect href="whereever">This page has moved</redirect>
<html:blockquote>
<hlink namespace="http://www.w3.org/1999/xhtml"
element="blockquote"
locator="cite"
effectValue="new"
actuateValue="onRequestSecondary"/><hlink namespace="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
element="Description"
locator="about"
effectValue="new"
actuateValue="onRequestSecondary"/>
<hlink namespace="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
locator="resource"
effectValue="new"
actuateValue="onRequestSecondary"/>This section is normative.
There are two ways to use HLink. The first is [[by putting the <hlink>s in the <head>, and the other by putting them in a separate resource, and referring to that resource by a hlink:definition URI attribute on the root element of the document
Either this
<html hlink:definition="http://www.example.org/whatever" ...>
or this:
<html ...>
<head>
<hlink:hlink ... />
...
</head>
]]
A. Module ImplementationsThis appendix is normative.
[[NOT YET UP TO DATE]]
A.1. DTD Implementation A.1.1. HLink DTD<?xml version="1.0" encoding="UTF-8"?>
<!-- ...................................................................... -->
<!-- HLink DTD ............................................................ -->
<!-- URI: http://www.w3.org/2002/06/hlink.dtd
This is HLink - a link recongnition mechanism for the XHTML Family.
Copyright ©2002 W3C (MIT, INRIA, Keio), All Rights Reserved.
Editor: Masayasu Ishikawa <mimasa@w3.org>
Revision: $Id: Overview.html,v 1.5 2018/10/09 13:23:57 denis Exp $
Permission to use, copy, modify and distribute the HLink DTD and its
accompanying documentation for any purpose and without fee is hereby
granted in perpetuity, provided that the above copyright notice and
this paragraph appear in all copies. The copyright holders make no
representation about the suitability of this DTD for any purpose.
It is provided "as is" without expressed or implied warranty.
This DTD module is identified by the PUBLIC and SYSTEM identifiers:
PUBLIC "-//W3C//DTD HLink 1.0//EN"
SYSTEM "http://www.w3.org/2002/06/hlink.dtd"
Revisions:
(none)
....................................................................... -->
<!-- HLink
hlinks, hlink
This HLink DTD declares elements and attributes defining
HLink, a link recongnition mechanism for the XHTML Family.
-->
<!-- Datatypes
defines containers for the following datatypes, many of
these imported from other specifications and standards -
not quite used at the moment.
-->
<!-- media type, as per [RFC2045] -->
<!ENTITY % ContentType.datatype "CDATA" >
<!-- comma separated list of coordinates to use in defining areas -->
<!ENTITY % Coords.datatype "CDATA" >
<!-- space-separated list of link types -->
<!ENTITY % LinkTypes.datatype "NMTOKENS" >
<!-- the shape of a region -->
<!ENTITY % Shape.datatype "( default | rect | circle | poly )">
<!-- a Uniform Resource Identifier reference, as per anyURI in
XML Schema Part 2 [SCHEMA]
-->
<!ENTITY % URI.datatype "CDATA" >
<!-- HLink Qname (Qualified Name) Module -->
<!ENTITY % hlink-qname.mod
PUBLIC "-//W3C//ENTITIES HLink Qualified Names 1.0//EN"
"hlink-qname.mod" >
%hlink-qname.mod;
<!-- hlinks element .................................... -->
<!ELEMENT %HLINK.hlinks.qname; ( %HLINK.hlink.qname; )+ >
<!ATTLIST %HLINK.hlinks.qname;
%HLINK.xmlns.attrib;
>
<!-- hlink element ..................................... -->
<!ELEMENT %HLINK.hlink.qname; EMPTY >
<!ATTLIST %HLINK.hlink.qname;
%HLINK.xmlns.attrib;
namespace %URI.datatype; #REQUIRED
element NMTOKEN #IMPLIED
locator CDATA #IMPLIED
effect CDATA #IMPLIED
actuate CDATA #IMPLIED
replacement CDATA #IMPLIED
role CDATA #IMPLIED
reverseRole CDATA #IMPLIED
shape CDATA #IMPLIED
coords CDATA #IMPLIED
arcrole CDATA #IMPLIED
label CDATA #IMPLIED
from CDATA #IMPLIED
to CDATA #IMPLIED
contentType CDATA #IMPLIED
onSuccess CDATA #IMPLIED
onFailure CDATA #IMPLIED
>
<!-- end of hlink.dtd -->A.1.2. HLink Qname Module
<?xml version="1.0" encoding="UTF-8"?>
<!-- ....................................................................... -->
<!-- HLink Qname Module ................................................... -->
<!-- URI: http://www.w3.org/2002/06/hlink-qname.mod
This is HLink - a link recongnition mechanism for the XHTML Family.
Copyright ©2002 W3C (MIT, INRIA, Keio), All Rights Reserved.
Revision: $Id: Overview.html,v 1.5 2018/10/09 13:23:57 denis Exp $
This DTD module is identified by the PUBLIC and SYSTEM identifiers:
PUBLIC "-//W3C//ENTITIES HLink Qualified Names 1.0//EN"
SYSTEM "http://www.w3.org/2002/06/hlink-qname.mod"
Revisions:
(none)
....................................................................... -->
<!-- HLink Qname (Qualified Name) Module
This module is contained in two parts, labeled Section 'A' and 'B':
Section A declares parameter entities to support namespace-
qualified names, namespace declarations, and name prefixing
for HLink and extensions.
Section B declares parameter entities used to provide
namespace-qualified names for all HLink element types:
%HLINK.hlinks.qname; the xmlns-qualified name for <hlinks>
...
-->
<!-- Section A: HLink XML Namespace Framework :::::::::::::::::::: -->
<!-- 1. Declare a %HLINK.prefixed; conditional section keyword, used
to activate namespace prefixing. The default value should
inherit '%HLINK.NS.prefixed;' from the DTD driver, so that unless
overridden, the default behaviour follows the overall DTD
prefixing scheme.
-->
<!ENTITY % HLINK.NS.prefixed "IGNORE" >
<!ENTITY % HLINK.prefixed "%HLINK.NS.prefixed;" >
<!-- 2. Declare a parameter entity (eg., %HLINK.xmlns;) containing
the URI reference used to identify the HLink namespace
-->
<!ENTITY % HLINK.xmlns "http://www.w3.org/2002/06/hlink" >
<!-- 3. Declare parameter entities (eg., %MODULE.prefix;) containing
the default namespace prefix string(s) to use when prefixing
is enabled. This may be overridden in the DTD driver or the
internal subset of an document instance. If no default prefix
is desired, this may be declared as an empty string.
NOTE: As specified in [XMLNAMES], the namespace prefix serves
as a proxy for the URI reference, and is not in itself significant.
-->
<!ENTITY % HLINK.prefix "hlink" >
<!-- 4. Declare parameter entities (eg., %HLINK.pfx;) containing the
colonized prefix(es) (eg., '%HLINK.prefix;:') used when
prefixing is active, an empty string when it is not.
-->
<![%HLINK.prefixed;[
<!ENTITY % HLINK.pfx "%HLINK.prefix;:" >
]]>
<!ENTITY % HLINK.pfx "" >
<!-- declare qualified name extensions here ............ -->
<!ENTITY % hlink-qname-extra.mod "" >
%hlink-qname-extra.mod;
<!-- 5. The parameter entity %HLINK.xmlns.extra.attrib; may be
redeclared to contain any non-HLink namespace declaration
attributes for namespaces embedded in XML. The default
is an empty string. XLink should be included here if used
in the DTD.
-->
<!ENTITY % HLINK.xmlns.extra.attrib "" >
<![%HLINK.prefixed;[
<!ENTITY % HLINK.NS.decl.attrib
"xmlns:%HLINK.prefix; %URI.datatype; #FIXED '%HLINK.xmlns;'
%HLINK.xmlns.extra.attrib;"
>
]]>
<!ENTITY % HLINK.NS.decl.attrib
"%HLINK.xmlns.extra.attrib;"
>
<!-- Declare a parameter entity %HLINK.NS.decl.attrib; containing all
XML namespace declaration attributes used by HLink, including
a default xmlns declaration when prefixing is inactive.
-->
<![%HLINK.prefixed;[
<!ENTITY % HLINK.xmlns.attrib
"%HLINK.NS.decl.attrib;"
>
]]>
<!ENTITY % HLINK.xmlns.attrib
"xmlns %URI.datatype; #FIXED '%HLINK.xmlns;'
%HLINK.xmlns.extra.attrib;"
>
<!-- Section B: XML Qualified Names ::::::::::::::::::::::::::::: -->
<!-- 6. This section declares parameter entities used to provide
namespace-qualified names for all HLink element types.
-->
<!ENTITY % HLINK.hlinks.qname "%HLINK.pfx;hlinks" >
<!ENTITY % HLINK.hlink.qname "%HLINK.pfx;hlink" >
<!-- end of hlink-qname.mod -->A.2. RELAX NG Implementation
<?xml version="1.0" encoding="UTF-8"?>
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0"
ns="http://www.w3.org/2002/06/hlink"
datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
<start>
<choice>
<ref name="hlinks"/>
</choice>
</start>
<a:documentation>
HLink in RELAX NG
URI: http://www.w3.org/2002/06/hlink.rng
This is HLink - a link recongnition mechanism for the XHTML Family.
Copyright ©2002 W3C (MIT, INRIA, Keio), All Rights Reserved.
Editor: Masayasu Ishikawa (mimasa@w3.org)
Revision: $Id: Overview.html,v 1.5 2018/10/09 13:23:57 denis Exp $
Permission to use, copy, modify and distribute the HLink RELAX NG
schema and its accompanying documentation for any purpose and
without fee is hereby granted in perpetuity, provided that
the above copyright notice and this paragraph appear in all copies.
The copyright holders make no representation about the suitability
of this RELAX NG schema for any purpose.
It is provided "as is" without expressed or implied warranty.
Revisions:
(none)
</a:documentation>
<a:documentation>
HLink
hlinks, hlink
This HLink RELAX NG schema declares elements and attributes defining
HLink, a link recongnition mechanism for the XHTML Family.
</a:documentation>
<a:documentation>
Datatypes
defines containers for the following datatypes, many of
these imported from other specifications and standards.
</a:documentation>
<define name="AttName">
<a:documentation>
the name of an attribute which begins with "@", a la @name
</a:documentation>
<data type="string">
<param name="pattern">@\c+</param>
</data>
</define>
<define name="ContentType">
<a:documentation>
media type, as per [RFC2045]
</a:documentation>
<text/>
</define>
<define name="Coords">
<a:documentation>
comma separated list of coordinates to use in defining areas
</a:documentation>
<data type="string">
<param name="pattern"
>[-+]?(\d+|\d+(\.\d+)?%)(,\s*[-+]?(\d+|\d+(\.\d+)?%))*</param>
</data>
</define>
<define name="LinkTypes">
<a:documentation>
space-separated list of link types
</a:documentation>
<data type="NMTOKENS"/>
</define>
<define name="Shape">
<a:documentation>
the shape of a region
</a:documentation>
<choice>
<value>default</value>
<value>rect</value>
<value>circle</value>
<value>poly</value>
</choice>
</define>
<define name="URI">
<a:documentation>
a Uniform Resource Identifier reference, as per anyURI in
XML Schema Part 2 [SCHEMA]
</a:documentation>
<data type="anyURI"/>
</define>
<define name="hlinks">
<a:documentation>
hlinks element
</a:documentation>
<element name="hlinks">
<oneOrMore>
<ref name="hlink"/>
</oneOrMore>
</element>
</define>
<define name="hlink">
<a:documentation>
hlink element
</a:documentation>
<element name="hlink">
<ref name="hlink.attlist"/>
</element>
</define>
<define name="hlink.attlist">
<attribute name="namespace">
<ref name="URI"/>
</attribute>
<optional>
<attribute name="element">
<data type="NMTOKEN"/>
</attribute>
</optional>
<optional>
<attribute name="locator">
<choice>
<ref name="URI"/>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="effect" a:defaultValue="replace">
<choice>
<value>new</value>
<value>replace</value>
<value>embed</value>
<value>submit</value>
<value>map</value>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="actuate" a:defaultValue="onRequest">
<choice>
<value>onLoad</value>
<value>onRequest</value>
<value>onRequestSecondary</value>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="replacement"/>
</optional>
<optional>
<attribute name="role">
<choice>
<ref name="LinkTypes"/>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="reverseRole">
<choice>
<ref name="LinkTypes"/>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="shape" a:defaultValue="default">
<choice>
<ref name="Shape"/>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="coords">
<choice>
<ref name="Shape"/>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="arcrole">
<choice>
<ref name="URI"/>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="label"/>
</optional>
<optional>
<attribute name="from"/>
</optional>
<optional>
<attribute name="to"/>
</optional>
<optional>
<attribute name="contentType">
<choice>
<ref name="ContentType"/>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="onSuccess" a:defaultValue="ignoreChildren">
<choice>
<value>processChildren</value>
<value>ignoreChildren</value>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
<optional>
<attribute name="onFailure" a:defaultValue="warn">
<choice>
<value>processChildren</value>
<value>ignoreChildren</value>
<value>warn</value>
<value>fail</value>
<ref name="AttName"/>
</choice>
</attribute>
</optional>
</define>
</grammar>A.3. XML Schema Implementation
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.w3.org/2002/06/hlink"
xmlns="http://www.w3.org/2002/06/hlink"
elementFormDefault="qualified">
<xs:annotation>
<xs:documentation>
HLink in XML Schema
URI: http://www.w3.org/2002/06/hlink.xsd
This is HLink - a link recongnition mechanism for the XHTML Family.
Copyright ©2002 W3C (MIT, INRIA, Keio), All Rights Reserved.
Editor: Masayasu Ishikawa (mimasa@w3.org)
Revision: $Id: Overview.html,v 1.5 2018/10/09 13:23:57 denis Exp $
Permission to use, copy, modify and distribute the HLink XML Schema
and its accompanying documentation for any purpose and without fee
is hereby granted in perpetuity, provided that the above copyright
notice and this paragraph appear in all copies.
The copyright holders make no representation about the suitability
of this XML Schema for any purpose.
It is provided "as is" without expressed or implied warranty.
Revisions:
(none)
</xs:documentation>
</xs:annotation>
<xs:annotation>
<xs:documentation>
HLink
hlinks, hlink
This HLink XML Schema declares elements and attributes defining
HLink, a link recongnition mechanism for the XHTML Family.
</xs:documentation>
</xs:annotation>
<xs:annotation>
<xs:documentation>
Datatypes
defines containers for the following datatypes, many of
these imported from other specifications and standards.
</xs:documentation>
</xs:annotation>
<xs:simpleType name="AttName">
<xs:annotation>
<xs:documentation>
the name of an attribute which begins with "@", a la @name
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:pattern value="@\c+"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="ContentType">
<xs:annotation>
<xs:documentation>
media type, as per [RFC2045]
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:string"/>
</xs:simpleType>
<xs:simpleType name="Coords">
<xs:annotation>
<xs:documentation>
comma separated list of lengths
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:pattern
value="[-+]?(\d+|\d+(\.\d+)?%)(,\s*[-+]?(\d+|\d+(\.\d+)?%))*"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="LinkTypes">
<xs:annotation>
<xs:documentation>
space-separated list of link types
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:NMTOKENS"/>
</xs:simpleType>
<xs:simpleType name="Shape">
<xs:restriction base="xs:token">
<xs:enumeration value="default"/>
<xs:enumeration value="rect"/>
<xs:enumeration value="circle"/>
<xs:enumeration value="poly"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="URI">
<xs:annotation>
<xs:documentation>
a Uniform Resource Identifier reference, as per anyURI in
XML Schema Part 2 [SCHEMA]
</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:anyURI"/>
</xs:simpleType>
<xs:simpleType name="Effect">
<xs:restriction base="xs:token">
<xs:enumeration value="new"/>
<xs:enumeration value="replace"/>
<xs:enumeration value="embed"/>
<xs:enumeration value="submit"/>
<xs:enumeration value="map"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="Actuate">
<xs:restriction base="xs:token">
<xs:enumeration value="onLoad"/>
<xs:enumeration value="onRequest"/>
<xs:enumeration value="onRequestSecondary"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="OnSuccess">
<xs:restriction base="xs:token">
<xs:enumeration value="processChildren"/>
<xs:enumeration value="ignoreChildren"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="OnFailure">
<xs:restriction base="xs:token">
<xs:enumeration value="processChildren"/>
<xs:enumeration value="ignoreChildren"/>
<xs:enumeration value="warn"/>
<xs:enumeration value="fail"/>
</xs:restriction>
</xs:simpleType>
<xs:element name="hlinks">
<xs:annotation>
<xs:documentation>
hlinks element
</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" ref="hlink"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="hlink">
<xs:annotation>
<xs:documentation>
hlink element
</xs:documentation>
</xs:annotation>
<xs:complexType>
<xs:attributeGroup ref="hlink.attlist"/>
</xs:complexType>
</xs:element>
<xs:attributeGroup name="hlink.attlist">
<xs:attribute name="namespace" use="required" type="URI"/>
<xs:attribute name="element" type="xs:NMTOKEN"/>
<xs:attribute name="locator">
<xs:simpleType>
<xs:union memberTypes="URI AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="effect" default="replace">
<xs:simpleType>
<xs:union memberTypes="Effect AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="actuate" default="onRequest">
<xs:simpleType>
<xs:union memberTypes="Actuate AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="replacement"/>
<xs:attribute name="role">
<xs:simpleType>
<xs:union memberTypes="LinkTypes AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="reverseRole">
<xs:simpleType>
<xs:union memberTypes="LinkTypes AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="shape" default="default">
<xs:simpleType>
<xs:union memberTypes="Shape AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="coords">
<xs:simpleType>
<xs:union memberTypes="Coords AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="arcrole">
<xs:simpleType>
<xs:union memberTypes="URI AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="label"/>
<xs:attribute name="from"/>
<xs:attribute name="to"/>
<xs:attribute name="contentType">
<xs:simpleType>
<xs:union memberTypes="ContentType AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="onSuccess" default="ignoreChildren">
<xs:simpleType>
<xs:union memberTypes="OnSuccess AttName"/>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="onFailure" default="warn">
<xs:simpleType>
<xs:union memberTypes="OnFailure AttName"/>
</xs:simpleType>
</xs:attribute>
</xs:attributeGroup>
</xs:schema>B. References
This appendix is normative.
B.1. Normative ReferencesThis section is informative.
This document was prepared by the W3C XHTML2 Working Group. The members at the time of publication of the Note were:
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HTML:
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| Version:
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