2016-11-01 21:52:57 -04:00
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<?xml version='1.0' encoding='UTF-8'?>
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<!DOCTYPE xep SYSTEM 'xep.dtd' [
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<!ENTITY % ents SYSTEM 'xep.ent'>
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%ents;
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]>
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<?xml-stylesheet type='text/xsl' href='xep.xsl'?>
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<xep>
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<header>
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<title>Spoiler messages</title>
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<abstract>
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This specification defines an XMPP protocol extension that provides a
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method for indicating a message is a spoiler and should be displayed as
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such.
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</abstract>
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&LEGALNOTICE;
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2016-12-07 11:36:02 -05:00
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<number>0382</number>
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<status>Experimental</status>
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2016-11-01 21:52:57 -04:00
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<type>Standards Track</type>
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<sig>Standards</sig>
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<approver>Council</approver>
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<dependencies>
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<spec>XMPP Core</spec>
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</dependencies>
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<supersedes/>
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<supersededby/>
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<shortname>spoilers</shortname>
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<author>
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<firstname>Severino</firstname>
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<surname>Ferrer de la Peñita</surname>
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<email>soul@blastersklan.com</email>
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<jid>soul@blastersklan.com</jid>
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</author>
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<author>
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<firstname>Xavier</firstname>
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<surname>Ferrer de la Peñita</surname>
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<email>vaulor@openmailbox.org</email>
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<jid>vaulor@blastersklan.com</jid>
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</author>
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<revision>
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<version>0.1</version>
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<date>2016-12-07</date>
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<initials>XEP Editor: ssw</initials>
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<remark><p>Initial version approved by the council.</p></remark>
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</revision>
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<revision>
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<version>0.0.2</version>
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<date>2016-10-31</date>
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<initials>sfp, xfp</initials>
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<remark><p>First draft.</p></remark>
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</revision>
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</header>
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<section1 topic='Introduction' anchor='intro'>
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<p>
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Sometimes, people have the need to send large texts related to the current
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topic but because of their length, make it hard to follow the conversation
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(specially on mobile devices). On other occasions, people may want to
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discuss or just make a little quick comment related to a film or a book in
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a conversation with multiple people that may or may not know the plot.
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Also, every now and then, people may want to send a private message (in
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the sense that people near the receiver must not be able to read) or
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inline images to someone is known is in a public enviroment like
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libraries, coffehouses, bars, etc.
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</p>
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<p>
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This specification defines a way to indicate message's content does not
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have to be displayed until receiver requests to do so.
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</p>
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</section1>
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<section1 topic='Discovering support' anchor='disco'>
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<p>
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If a client implements spoiler messages, it MUST specify the
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'urn:xmpp:spoiler:0' feature in its service discovery information
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features as specified in &xep0030; and the Entity Capabilities profile
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specified in &xep0115;.
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</p>
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<example caption='Client requests information about a chat partner's client'><![CDATA[
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<iq from='romeo@montague.net/orchard'
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id='disco1'
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to='juliet@capulet.lit/balcony'
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type='get'>
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<query xmlns='http://jabber.org/protocol/disco#info'/>
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</iq>]]></example>
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<example caption='Partner's client advertises support for spoiler messages'><![CDATA[
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<iq to='romeo@montague.net/orchard'
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id='disco1'
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from='juliet@capulet.lit/balcony'
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type='result'>
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<query xmlns='http://jabber.org/protocol/disco#info'>
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…
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<feature var='urn:xmpp:spoiler:0'/>
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…
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</query>
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</iq>]]></example>
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</section1>
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<section1 topic='Use Cases' anchor='usecases'>
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<p>
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Messages user wants to be sent as spoilers, MUST contain a <spoiler> element qualified by the
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'urn:xmpp:spoiler:0' namespace and optionally, <spoiler> elements may contain character data as
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a hint that warns about the topic of the spoiler message. They may also possess the 'xml:lang'
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attribute.
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</p>
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<example caption='User sends a spoiler message without the hint'><![CDATA[
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<message to='romeo@montague.net/orchard' from='juliet@capulet.net/balcony' id='spoiler1'>
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<body>This is a very long message so I'm going to hide inside a spoiler [...] </body>
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<spoiler xmlns='urn:xmpp:spoiler:0'/>
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</message>
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]]></example>
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<example caption='User sends a spoiler message with the hint'><![CDATA[
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<message to='romeo@montague.net/orchard' from='juliet@capulet.net/balcony' id='spoiler2'>
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<body>And at the end of the story, both of them die! It is so tragic!</body>
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<spoiler xmlns='urn:xmpp:spoiler:0'>Love story end</spoiler>
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</message>
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]]></example>
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<example caption='User sends a spoiler message with the hint in two languages'><![CDATA[
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<message to='romeo@montague.net/orchard' from='juliet@capulet.net/balcony' id='spoiler3'>
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<body>holidays.png</body>
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<spoiler xml:lang='en' xmlns='urn:xmpp:spoiler:0'>Trip to the beach</spoiler>
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<spoiler xml:lang='ca' xmlns='urn:xmpp:spoiler:0'>Viatge a la platja</spoiler>
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</message>
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]]></example>
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<example caption='User sends a spoiler message with the hint and body in two languages'><![CDATA[
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<message to='romeo@montague.net/orchard' from='juliet@capulet.net/balcony' id='spoiler4'>
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<body xml:lang='en'>And at the end of the story, both of them die! It is so tragic!</body>
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<body xml:lang='ca'>I al final de la història, els dos moren! És tan tràgic!</body>
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<spoiler xml:lang='en' xmlns='urn:xmpp:spoiler:0'>Love story end</spoiler>
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<spoiler xml:lang='ca' xmlns='urn:xmpp:spoiler:0'>Fi de la història d'amor</spoiler>
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</message>
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]]></example>
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</section1>
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<section1 topic='Business Rules' anchor='rules'>
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<ol>
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<li>It MUST be clear that a message is in fact a spoiler and its content MUST only be displayed upon
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user's request.</li>
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<li>Clients MAY provide a way to display spoilers always uncovered, without the need of interaction
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by the user (e.g. in the client's settings).</li>
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<li>Clients SHOULD display spoiler's hint, if any, before showing message's content.</li>
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<li>Clients MAY display spoiler's hint even after showing message's content (e.g. as a header or
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title of the message).</li>
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<li>Users SHOULD uncover or hide a spoiler message at will, anytime.</li>
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</ol>
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</section1>
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<section1 topic='Security Considerations' anchor='security'>
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<p>
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This document introduces no additional security considerations above and
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beyond those defined in the documents on which it depends.
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</p>
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</section1>
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<section1 topic='IANA Considerations' anchor='iana'>
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<p>This document requires no interaction with &IANA;.</p>
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</section1>
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<section1 topic='XMPP Registrar Considerations' anchor='registrar'>
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<section2 topic='Protocol Namespaces' anchor='registrar-ns'>
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<p>This specification defines the following XML namespace:</p>
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<ul>
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<li>'urn:xmpp:spoiler:0'</li>
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</ul>
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<p>
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Upon advancement of this specification to draft status, the ®ISTRAR;
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shall include the foregoing namespaces in its registry of protocol
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namespaces &NAMESPACES; and in its disco features registry
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&DISCOFEATURES; as defined in &xep0030;.
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</p>
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<code caption='Registration'><![CDATA[
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<var>
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<name>urn:xmpp:spoiler:0</name>
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<desc>Indicates that a message's content should not be displayed by default.</desc>
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<doc>0382</doc>
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</var>
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]]></code>
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</section2>
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</section1>
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<section1 topic='XML Schema' anchor='schema'>
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<code><![CDATA[
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<?xml version='1.0' encoding='UTF-8'?>
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<xs:schema
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xmlns:xs='http://www.w3.org/2001/XMLSchema'
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targetNamespace='urn:xmpp:spoiler:0'
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xmlns='urn:xmpp:spoiler:0'
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elementFormDefault='qualified'>
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<xs:element name='spoiler'>
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<xs:complexType>
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<xs:simpleContent>
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<xs:extension base='xs:string'>
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<xs:attribute ref='xml:lang' use='optional'/>
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</xs:extension>
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</xs:simpleContent>
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</xs:complexType>
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</xs:element>
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</xs:schema>
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]]></code>
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</section1>
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</xep>
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