Author	Return the author of the document.
CanAddNotes	Return if adding notes is possible.
CanCopy	Return if the document can be copied.
CanModify	Return if the document can be modified.
CanPrint	Return if the document can be printed.
CreationDate	Return the document creation date.
Creator	Return the creator of the document.
Format	Return the document format.
Keywords	Returns the keywords associated to the document.
Layout	Returns the page layout that should be used when the document is opened.
Linearized	Returns whether the document is linearized or not.
Mode	Returns a constant from the PdfPageMode class representing how the document should be initially displayed when opened.
ModificationDate	Return the last modification date of the document.
Producer	Returns the producer of the document. If the document was converted from another format, the producer is the name of the product that converted it to PDF.
Subject	Return the subject of the document.
Title	Returns the title of the document.