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SECTION 8.2                                                     Document-Level Navigation



Example 8.3 shows a collection dictionary representing an email in-box, where
each item in the collection is an email message. The actual email messages are
contained in file specification dictionaries. The organizational data associated
with each email is described in a collection schema dictionary. Most actual orga-
nizational data (from, to, date, and subject) is provided in a collection item dic-
tionary, but the size data comes from the embedded file parameter dictionary.

Example 8.3
   /Collection <<
      /Type /Collection
      /Schema <<
          /Type /CollectionSchema
          /from << /Subtype /S /N (From) /O 1 /V true /E false>>
          /to << /Subtype /S /N (To) /O 2 /V true /E false >>
          /date << /Subtype /D /N (Date received) /O 3 /V true /E false >>
          /subject << /Subtype /S /N (Subject) /O 4 /V true /E false >>
          /size << /Subtype /Size /N (Size) /O 5 /V true /E false >>
          >>
      /D (Doc1)
      /View /D
      /Sort << /S /date /A false >>
   >>

Example 8.4 shows a collection item dictionary and a collection subitem dictio-
nary. These dictionaries contain entries that correspond to the schema entries
specified in Example 8.3. Section 3.10.5, “Collection Items” specifies the collec-
tion item and collection subitem dictionaries.

Example 8.4
   /CI <<
       /Type /CollectionItem
       /from (Rob McAfee)
       /to (Patty McAfee)
       /subject <<
           /Type /CollectionSubitem
           /P (Re:)
           /D (Let's have lunch on Friday!)
       >>
       /date (D:20050621094703-07’00’)
   >>

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