size = A Tuple (width, height) describing
the Size of the Document.
margins = A Tuple (Left, Right, Top, Bottom) describing the Margins
of the Document.
orientation = the Page Orientation, 0 means Portrait, 1 is Landscape
firstPageNumer is the Number of the first Page in the Document used
for Pagenumbering
unit: this Value sets the Measurement Unit of the Document
0 = Typograpic Points
1 = Millimeters
2 = Inches
3 = Picas
FacingPages: 1 means FacingPages turned
on, 0 means FacingPages turned off
FirstSideLeft: 1 means that the first Page in the Document is a left
Page, 0 means a right Page as first Page
The values for Width, Height and the Margins are expressed in the
given unit for the Document.