39. A method for representing a position-coded product in a digital pen system, the method comprising: creating an electronic document file of a predetermined format, the electronic document file comprising a set of document pages; adding to the electronic document file at least one pattern license file including addresses corresponding to a set of pattern pages having a given ordering, the at least one pattern license file further including a starting page address and a license parameter identifying at least one property of the at least one pattern license file, each of the addresses in the at least one pattern license file identifying at least one pattern page included in the set of pattern pages, wherein each of the pattern pages is a unique part of a position-coding pattern, and the at least one pattern license file associates the set of pattern pages with the position-coding pattern before and independent of an action of printing copies of the position-coded product; activating the electronic document file for a number of product copies, wherein each product copy contains the set of document pages, and wherein the document pages are implicitly associated, in copy for copy order, with the pattern pages identified by the at least one pattern license file; printing a second number of the activated product copies by deriving the document pages and the associated pattern pages based on the electronic document file; and indicating the activated product copies thus-printed in the electronic document file.
43. The method of claim 39 , further comprising providing the activated electronic document file, or part thereof, to an application program for processing position data recorded by a digital pen from one or more of the printed product copies.