5. The method of claim 1 , wherein: receiving contact information comprises: receiving a website address of the product information provider associated with the structural document, and generating a second encoded data mark that embodies the website address, and the second encoded data mark is displayed on the graphical representation at the location.
6. The method of claim 5 , wherein one or more of the encoded data mark and the second encoded data mark comprises one or more of the following: a one-dimensional bar code; a two-dimensional bar code; a QR code; and a printable radio-frequency identification code.