1. A system for conferring interactivity on a pre-printed image containing text, said image having been scanned and had a position-coding pattern printed thereon, said position-coding pattern identifying a plurality of absolute positions and an impression identity for the image, said system comprising a computer system configured for: (i) receiving association data indicating an association between the impression identity, the plurality of absolute positions and a scanned image; (ii) performing Optical Character Recognition (OCR) on the scanned image to convert text images into computer text; (iii) generating an input description for said scanned image, said input description describing words of computer text and zones of corresponding text images in the scanned image; and (iv) storing a page description comprising said input description and said scanned image, said page description being indexed with said impression identity, wherein said page description is retrievable so as to confer interactivity on the image.