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Changes in DTD 2.0.2 (8 May 2000)
---------------------------------

Structure:
- Added ENTITY.userDependent
- Added ENTITY.groupDependent
- Added COMPONENT.userDependent
- Added COMPONENT.groupDependent
- Added ATTRIBUTE.userDependent
- Added ATTRIBUTE.groupDependent
- Added RELATIONSHIP.userDependent
- Added RELATIONSHIP.groupDependent

Navigation:
- Added INDEXUNIT.samePopulationAs
- Added INDEXUNIT.first
- Added INDEXUNIT.last
- Added INDEXUNIT.previous
- Added INDEXUNIT.next
- Added INDEXUNIT.toPosition
- Added INDEXUNIT.showPosition
- Added MULTIDATAUNIT.samePopulationAs
- Added MULTIDATAUNIT.first
- Added MULTIDATAUNIT.last
- Added MULTIDATAUNIT.previous
- Added MULTIDATAUNIT.next
- Added MULTIDATAUNIT.toPosition
- Added MULTIDATAUNIT.showPosition
- Added SCROLLERUNIT.samePopulationAs
- LINK.to changed from IDREF to IDREFS
- Changed FIELD. The new syntax is the following:
  <!ELEMENT FIELD (DESCRIPTION?, SORTATTRIBUTE*)>
  <!ATTLIST FIELD
          id             ID               #REQUIRED
          name           CDATA            #IMPLIED
          type           (in|out|inout)   'out'
          cardinality    (1|many)         '1'
          entity         IDREF            #IMPLIED
          component      IDREF            #IMPLIED
          relationship   IDREF            #IMPLIED
  >

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Changes in DTD 2.0.1 (20 Apr 2000)
----------------------------------

Structure:
- COMPONENT.minCard changed from #IMPLIED to #REQUIRED
- COMPONENT.maxCard changed from #IMPLIED to #REQUIRED
- RELATIONSHIP.minCard changed from #IMPLIED to #REQUIRED
- RELATIONSHIP.maxCard changed from #IMPLIED to #REQUIRED

Navigation:
- DELETEUNIT declaration: changed LINK? to LINK*
- Added PARAMETER.type
- Added PARAMETER.attribute
- Added SEARCHATTRIBUTES.id
- SEARCHATTRIBUTES.predicate: removed 'between' from the enumerated list.

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Changes in DTD 2.0 (10 Mar 2000)
--------------------------------

- See DTDs for the list of changes from WebML 1 to WebML 2