A conventional paper product used for printing or for fabrication into envelopes, file folders, forms and the like, is prepared by having antimicrobial agents added into the sizing during the manufacturing process. A toolbar adds the ability to classify documents based on specific properties such as security classification, information type, document type, document retention, document caveats, and the like associated. In one embodiment, the projections are discontinuously positioned and are each separately secured to one or both of the sides of the base layer. The bridging members are between the adjacent joists and the bridging members are adapted to engage the bridging holes in the joists. Trapping set configurations are corrected in order to produce a trapping set in a table of trapping sets, the table associating each corrected trapping set with a valid codeword. The thus obtained probability is divided by a probability at which characteristics obtained as the result of character recognition are generated, and each of the division results obtained relevant to the characters of the words contained in the word dictionary is multiplied relevant to all the characters.