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<!-- ............................................................. -->
<!-- XML Topic Map DTD .......................................... -->
<!-- XML Topic Map (XTM) DTD, Version 2.0
This is XTM 2.0, an XML interchange syntax for ISO 13250 Topic
Maps, defined by ISO 13250-3.
Use this URI to identify the XTM namespace:
"http://www.topicmaps.org/xtm/"
The formal public identifier for this DTD is:
"ISO/IEC 13250-3:2005//DTD XML Topic Maps (XTM) 2.0//EN"
See http://www.isotopicmaps.org/sam/sam-xtm/
-->
<!-- topicMap .................................................... -->
<!ELEMENT topicMap
( itemIdentity*, mergeMap*, ( topic | association )* )
>
<!ATTLIST topicMap
version CDATA #FIXED '2.0'
xmlns CDATA #FIXED 'http://www.topicmaps.org/xtm/'
reifier CDATA #IMPLIED
>
<!-- topic ....................................................... -->
<!ELEMENT topic
( ( itemIdentity | subjectLocator | subjectIdentifier )*,
instanceOf?, ( name | occurrence )* )
>
<!ATTLIST topic
id ID #REQUIRED
>
<!-- itemIdentity ................................................ -->
<!ELEMENT itemIdentity
EMPTY
>
<!ATTLIST itemIdentity
href CDATA #REQUIRED
>
<!-- subjectLocator............................................... -->
<!ELEMENT subjectLocator
EMPTY
>
<!ATTLIST subjectLocator
href CDATA #REQUIRED
>
<!-- subjectIdentifier............................................ -->
<!ELEMENT subjectIdentifier
EMPTY
>
<!ATTLIST subjectIdentifier
href CDATA #REQUIRED
>
<!-- name ........................................................ -->
<!ELEMENT name
( itemIdentity*, type?, scope?, value, variant* )
>
<!ATTLIST name
reifier CDATA #IMPLIED
>
<!-- value ....................................................... -->
<!ELEMENT value ( #PCDATA ) >
<!-- variant ..................................................... -->
<!ELEMENT variant
( itemIdentity*, scope, ( resourceRef | resourceData ) )
>
<!ATTLIST variant
reifier CDATA #IMPLIED
>
<!-- scope ....................................................... -->
<!ELEMENT scope
( topicRef )+
>
<!-- instanceOf .................................................. -->
<!ELEMENT instanceOf
( topicRef )+
>
<!-- type .................................................. -->
<!ELEMENT type
( topicRef )
>
<!-- occurrence .................................................. -->
<!ELEMENT occurrence
( itemIdentity*, type, scope?, ( resourceRef | resourceData ) )
>
<!ATTLIST occurrence
reifier CDATA #IMPLIED
>
<!-- resourceData ................................................ -->
<!ELEMENT resourceData
ANY
>
<!ATTLIST resourceData
datatype CDATA #IMPLIED
>
<!-- resourceRef ................................................. -->
<!ELEMENT resourceRef
EMPTY
>
<!ATTLIST resourceRef
href CDATA #REQUIRED
>
<!-- association ................................................. -->
<!ELEMENT association
( itemIdentity*, type, scope?, role+ )
>
<!ATTLIST association
reifier CDATA #IMPLIED
>
<!-- role ........................................................ -->
<!ELEMENT role
( itemIdentity*, type, topicRef )
>
<!ATTLIST role
reifier CDATA #IMPLIED
>
<!-- topicRef .................................................... -->
<!ELEMENT topicRef
EMPTY
>
<!ATTLIST topicRef
href CDATA #REQUIRED
>
<!-- mergeMap .................................................... -->
<!ELEMENT mergeMap
EMPTY
>
<!ATTLIST mergeMap
href CDATA #REQUIRED
>
<!-- end of XML Topic Map (XTM) 2.0 DTD .......................... -->
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