3. A method according to claim 1 , wherein each electronic document instance includes at least one digital scan, using at least one illumination, of a physical document.
3. A method according to claim 1 , wherein each electronic document instance includes at least one digital scan, using at least one illumination, of a physical document. 17. A method according to claim 3 , wherein each electronic document instance includes a plurality of scans, using a plurality of illuminations, of a physical document.