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CHAPTER 10 Document Interchange
TABLE 10.2 Entries in the document information dictionary
KEY TYPE VALUE
Title text string (Optional; PDF 1.1) The document’s title.
Author text string (Optional) The name of the person who created the document.
Subject text string (Optional; PDF 1.1) The subject of the document.
Keywords text string (Optional; PDF 1.1) Keywords associated with the document.
Creator text string (Optional) If the document was converted to PDF from another format, the
name of the application (for example, Adobe FrameMaker®) that created the
original document from which it was converted.
Producer text string (Optional) If the document was converted to PDF from another format, the
name of the application (for example, Acrobat Distiller) that converted it to
PDF.
CreationDate date (Optional) The date and time the document was created, in human-readable
form (see Section 3.8.3, “Dates”).
ModDate date (Required if PieceInfo is present in the document catalog; otherwise optional;
PDF 1.1) The date and time the document was most recently modified, in hu-
man-readable form (see Section 3.8.3, “Dates”).
Trapped name (Optional; PDF 1.3) A name object indicating whether the document has
been modified to include trapping information (see Section 10.10.5, “Trap-
ping Support”):
True The document has been fully trapped; no further trapping is
needed. (This is the name True, not the boolean value true.)
False The document has not yet been trapped; any desired
trapping must still be done. (This is the name False, not the
boolean value false.)
Unknown Either it is unknown whether the document has been
trapped or it has been partly but not yet fully trapped; some
additional trapping may still be needed.
Default value: Unknown.
The value of this entry may be set automatically by the software creating the
document’s trapping information, or it may be known only to a human oper-
ator and entered manually.
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