PRINTING OF POSITION-CODED DOCUMENTS

A digital pen and paper system allows for printing of a document page superimposed on a pattern unit which is a unique part of a position-coding pattern. The system allows a user to change the format of the document page at the time of printing. To this end, the position-coding pattern is subdivided into predetermined pattern units, which are associated with a respective predetermined format. Knowledge about the pattern subdivision and its association with different formats is shared between a document generating part and a position processing part of the system. Thus, a method and apparatus in the document generating part enables the document page to be printed together with a pattern unit that is associated with a format selected by the user. Thereby, positions encoded on the printed document page will indicate a format change to a method and apparatus in the position processing part. Thereby, the position processing part may use the indicated format change to retain a correct mapping between positions and document page.