SECTION F.2
1033
Linearized PDF Document Structure
(This convention keeps their object numbers from conflicting with the number-
ing of the linearized objects.)
With one exception, the values of all entries in the hint streams’ dictionaries must
be direct objects and can contain no indirect object references. The exception is
the stream dictionary’s
Length
entry (see the discussion of the
H
entry in Table
F.1).
In addition to the standard stream attributes, the dictionary of the primary hint
stream contains entries giving the position of the beginning of each hint table in
the stream. These positions are given in bytes relative to the beginning of the
stream data (after decoding filters, if any, are applied) and with the overflow
hint stream concatenated if present. The dictionary of the overflow hint stream
should not contain these entries. The keys designating the standard hint tables
in the primary hint stream’s dictionary are listed in Table F.2; Section F.3, “Hint
Tables,” documents the format of these hint tables. Additionally, there is a re-
quired page offset hint table, which must be the first table in the stream and
must start at offset 0.
TABLE F.2 Standard hint tables
KEY
HINT TABLE
S
(Required)
Shared object hint table (see Section F.3.2, “Shared Object Hint Ta-
ble”)
(Present only if thumbnail images exist)
Thumbnail hint table (see Section F.3.3,
“Thumbnail Hint Table”)
(Present only if a document outline exists)
Outline hint table (see Section F.3.4,
“Generic Hint Tables”)
(Present only if article threads exist)
Thread information hint table (see Section
F.3.4, “Generic Hint Tables”)
(Present only if named destinations exist)
Named destination hint table (see
Section F.3.4, “Generic Hint Tables”)
(Present only if an interactive form dictionary exists)
Interactive form hint table
(see Section F.3.5, “Extended Generic Hint Tables”)
(Present only if a document information dictionary exists)
Information dictio-
nary hint table (see Section F.3.4, “Generic Hint Tables”)
T
O
A
E
V
I
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