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<?xml
version="1.0" ?> <!--
threaded notes XML data structure : recursive version--> <!DOCTYPE
DATASET [ <!--
DATASET is an acyclical directed graph of NOTEs --> <!ELEMENT
DATASET
(NOTE*) > <!ATTLIST
DATASET XML_VERSION
CDATA
"1.0" SOFTWARE
CDATA
#REQUIRED CREATOR
CDATA
#IMPLIED CREATE_DATE
CDATA
#REQUIRED DESCRIPTION
CDATA
#IMPLIED COMMENT
CDATA
#IMPLIED > <!ELEMENT
NOTE
(CONTENT, FIELD*, NOTE*) > <!ATTLIST
NOTE NOTE_ID
ID
#REQUIRED NOTE_KIND
CDATA
#IMPLIED LINK_TYPE
CDATA
#IMPLIED SEQUENCE
CDATA
#IMPLIED CREATE_DATE
CDATA
#REQUIRED TITLE
CDATA
#REQUIRED AUTHOR
CDATA
#REQUIRED > <!ELEMENT
CONTENT
(#PCDATA) > <!ELEMENT
FIELD
EMPTY > <!ATTLIST
FIELD
NAME
CDATA
#REQUIRED VALUE
CDATA
#REQUIRED > ]> ========================================================== Design Rationale: A DATASET consists of a NOTE, which includes its sub-tree of NOTEs. A NOTE consists of 7 attributes, some textual content (possibly including tags referencing multimedia, html links, etc.), possibly some special additional fields, and its sub-tree of NOTEs. A FIELD consists of a name and a value. This allows fields that are particular to a specific application to be preserved. E.g., in the WebGuide system, NOTEs have a "perspective" field.
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