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