12. A method for creating a watermark in a target digital document at different stages of the target document life cycle to be carried out by a computer adapted to perform the steps of: scanning the target document containing a target watermark; recovering the target watermark from the target document, the recovered target watermark indicating a template specification that describes how the target watermark was merged into the target document; generating an additional watermark according to a watermark specification; updating the template specification by adding the watermark specification and associating the additional watermark with the watermark specification in the template specification; and merging the generated additional watermark with the scanned target document.
15. The method of claim 12 , wherein the target watermark has a dataglyph format indicating a form type associated with the template specification.