1 <?xml version='1.0'?> 2 <?xml-stylesheet href="../2008/09/xsd.xsl" type="text/xsl"?> 3 <xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" 4 xmlns:xs="http://www.w3.org/2001/XMLSchema" 5 xmlns ="http://www.w3.org/1999/xhtml" 6 xml:lang="en"> 7 8 <xs:annotation> 9 <xs:documentation> 10 <div> 11 <h1>About the XML namespace</h1> 12 13 <div class="bodytext"> 14 <p> 15 This schema document describes the XML namespace, in a form 16 suitable for import by other schema documents. 17 </p> 18 <p> 19 See <a href="http://www.w3.org/XML/1998/namespace.html"> 20 http://www.w3.org/XML/1998/namespace.html</a> and 21 <a href="http://www.w3.org/TR/REC-xml"> 22 http://www.w3.org/TR/REC-xml</a> for information 23 about this namespace. 24 </p> 25 <p> 26 Note that local names in this namespace are intended to be 27 defined only by the World Wide Web Consortium or its subgroups. 28 The names currently defined in this namespace are listed below. 29 They should not be used with conflicting semantics by any Working 30 Group, specification, or document instance. 31 </p> 32 <p> 33 See further below in this document for more information about <a 34 href="#usage">how to refer to this schema document from your own 35 XSD schema documents</a> and about <a href="#nsversioning">the 36 namespace-versioning policy governing this schema document</a>. 37 </p> 38 </div> 39 </div> 40 </xs:documentation> 41 </xs:annotation> 42 43 <xs:attribute name="lang"> 44 <xs:annotation> 45 <xs:documentation> 46 <div> 47 48 <h3>lang (as an attribute name)</h3> 49 <p> 50 denotes an attribute whose value 51 is a language code for the natural language of the content of 52 any element; its value is inherited. This name is reserved 53 by virtue of its definition in the XML specification.</p> 54 55 </div> 56 <div> 57 <h4>Notes</h4> 58 <p> 59 Attempting to install the relevant ISO 2- and 3-letter 60 codes as the enumerated possible values is probably never 61 going to be a realistic possibility. 62 </p> 63 <p> 64 See BCP 47 at <a href="http://www.rfc-editor.org/rfc/bcp/bcp47.txt"> 65 http://www.rfc-editor.org/rfc/bcp/bcp47.txt</a> 66 and the IANA language subtag registry at 67 <a href="http://www.iana.org/assignments/language-subtag-registry"> 68 http://www.iana.org/assignments/language-subtag-registry</a> 69 for further information. 70 </p> 71 <p> 72 The union allows for the 'un-declaration' of xml:lang with 73 the empty string. 74 </p> 75 </div> 76 </xs:documentation> 77 </xs:annotation> 78 <xs:simpleType> 79 <xs:union memberTypes="xs:language"> 80 <xs:simpleType> 81 <xs:restriction base="xs:string"> 82 <xs:enumeration value=""/> 83 </xs:restriction> 84 </xs:simpleType> 85 </xs:union> 86 </xs:simpleType> 87 </xs:attribute> 88 89 <xs:attribute name="space"> 90 <xs:annotation> 91 <xs:documentation> 92 <div> 93 94 <h3>space (as an attribute name)</h3> 95 <p> 96 denotes an attribute whose 97 value is a keyword indicating what whitespace processing 98 discipline is intended for the content of the element; its 99 value is inherited. This name is reserved by virtue of its 100 definition in the XML specification.</p> 101 102 </div> 103 </xs:documentation> 104 </xs:annotation> 105 <xs:simpleType> 106 <xs:restriction base="xs:NCName"> 107 <xs:enumeration value="default"/> 108 <xs:enumeration value="preserve"/> 109 </xs:restriction> 110 </xs:simpleType> 111 </xs:attribute> 112 113 <xs:attribute name="base" type="xs:anyURI"> <xs:annotation> 114 <xs:documentation> 115 <div> 116 117 <h3>base (as an attribute name)</h3> 118 <p> 119 denotes an attribute whose value 120 provides a URI to be used as the base for interpreting any 121 relative URIs in the scope of the element on which it 122 appears; its value is inherited. This name is reserved 123 by virtue of its definition in the XML Base specification.</p> 124 125 <p> 126 See <a 127 href="http://www.w3.org/TR/xmlbase/">http://www.w3.org/TR/xmlbase/</a> 128 for information about this attribute. 129 </p> 130 </div> 131 </xs:documentation> 132 </xs:annotation> 133 </xs:attribute> 134 135 <xs:attribute name="id" type="xs:ID"> 136 <xs:annotation> 137 <xs:documentation> 138 <div> 139 140 <h3>id (as an attribute name)</h3> 141 <p> 142 denotes an attribute whose value 143 should be interpreted as if declared to be of type ID. 144 This name is reserved by virtue of its definition in the 145 xml:id specification.</p> 146 147 <p> 148 See <a 149 href="http://www.w3.org/TR/xml-id/">http://www.w3.org/TR/xml-id/</a> 150 for information about this attribute. 151 </p> 152 </div> 153 </xs:documentation> 154 </xs:annotation> 155 </xs:attribute> 156 157 <xs:attributeGroup name="specialAttrs"> 158 <xs:attribute ref="xml:base"/> 159 <xs:attribute ref="xml:lang"/> 160 <xs:attribute ref="xml:space"/> 161 <xs:attribute ref="xml:id"/> 162 </xs:attributeGroup> 163 164 <xs:annotation> 165 <xs:documentation> 166 <div> 167 168 <h3>Father (in any context at all)</h3> 169 170 <div class="bodytext"> 171 <p> 172 denotes Jon Bosak, the chair of 173 the original XML Working Group. This name is reserved by 174 the following decision of the W3C XML Plenary and 175 XML Coordination groups: 176 </p> 177 <blockquote> 178 <p> 179 In appreciation for his vision, leadership and 180 dedication the W3C XML Plenary on this 10th day of 181 February, 2000, reserves for Jon Bosak in perpetuity 182 the XML name "xml:Father". 183 </p> 184 </blockquote> 185 </div> 186 </div> 187 </xs:documentation> 188 </xs:annotation> 189 190 <xs:annotation> 191 <xs:documentation> 192 <div xml:id="usage" id="usage"> 193 <h2><a name="usage">About this schema document</a></h2> 194 195 <div class="bodytext"> 196 <p> 197 This schema defines attributes and an attribute group suitable 198 for use by schemas wishing to allow <code>xml:base</code>, 199 <code>xml:lang</code>, <code>xml:space</code> or 200 <code>xml:id</code> attributes on elements they define. 201 </p> 202 <p> 203 To enable this, such a schema must import this schema for 204 the XML namespace, e.g. as follows: 205 </p> 206 <pre> 207 <schema . . .> 208 . . . 209 <import namespace="http://www.w3.org/XML/1998/namespace" 210 schemaLocation="http://www.w3.org/2001/xml.xsd"/> 211 </pre> 212 <p> 213 or 214 </p> 215 <pre> 216 <import namespace="http://www.w3.org/XML/1998/namespace" 217 schemaLocation="http://www.w3.org/2009/01/xml.xsd"/> 218 </pre> 219 <p> 220 Subsequently, qualified reference to any of the attributes or the 221 group defined below will have the desired effect, e.g. 222 </p> 223 <pre> 224 <type . . .> 225 . . . 226 <attributeGroup ref="xml:specialAttrs"/> 227 </pre> 228 <p> 229 will define a type which will schema-validate an instance element 230 with any of those attributes. 231 </p> 232 </div> 233 </div> 234 </xs:documentation> 235 </xs:annotation> 236 237 <xs:annotation> 238 <xs:documentation> 239 <div id="nsversioning" xml:id="nsversioning"> 240 <h2><a name="nsversioning">Versioning policy for this schema document</a></h2> 241 <div class="bodytext"> 242 <p> 243 In keeping with the XML Schema WG's standard versioning 244 policy, this schema document will persist at 245 <a href="http://www.w3.org/2009/01/xml.xsd"> 246 http://www.w3.org/2009/01/xml.xsd</a>. 247 </p> 248 <p> 249 At the date of issue it can also be found at 250 <a href="http://www.w3.org/2001/xml.xsd"> 251 http://www.w3.org/2001/xml.xsd</a>. 252 </p> 253 <p> 254 The schema document at that URI may however change in the future, 255 in order to remain compatible with the latest version of XML 256 Schema itself, or with the XML namespace itself. In other words, 257 if the XML Schema or XML namespaces change, the version of this 258 document at <a href="http://www.w3.org/2001/xml.xsd"> 259 http://www.w3.org/2001/xml.xsd 260 </a> 261 will change accordingly; the version at 262 <a href="http://www.w3.org/2009/01/xml.xsd"> 263 http://www.w3.org/2009/01/xml.xsd 264 </a> 265 will not change. 266 </p> 267 <p> 268 Previous dated (and unchanging) versions of this schema 269 document are at: 270 </p> 271 <ul> 272 <li><a href="http://www.w3.org/2009/01/xml.xsd"> 273 http://www.w3.org/2009/01/xml.xsd</a></li> 274 <li><a href="http://www.w3.org/2007/08/xml.xsd"> 275 http://www.w3.org/2007/08/xml.xsd</a></li> 276 <li><a href="http://www.w3.org/2004/10/xml.xsd"> 277 http://www.w3.org/2004/10/xml.xsd</a></li> 278 <li><a href="http://www.w3.org/2001/03/xml.xsd"> 279 http://www.w3.org/2001/03/xml.xsd</a></li> 280 </ul> 281 </div> 282 </div> 283 </xs:documentation> 284 </xs:annotation> 285 286 </xs:schema> 287