Kersten discloses the style of paper, ink, printers and photo-editing software Williams used--all are commercially available.

FORBES: Book Review

An early check of the A-level further maths paper on 31 May found an error and the paper was returned to the printers to be altered.

BBC: exam pic generic

If photo albums are your preferred method of storage, digital shots can be turned into glossy hard copies with inexpensive color printers and the right paper.

CNN: The Proof Is in the Pixels