1. A method of outputting information to compare at least two documents, namely, at least a first document and a second document, to facilitate visual mapping and comparison of said documents, said documents comprising document subsections and said subsections comprising document subsection headers associated therewith, comprising the steps of: mapping the first document subsections relative to the second document subsections based on identifying substantial similarities therebetween, to establish a subsection mapping therebetween; in relation to said subsection mapping and the association between said document subsections and said subsection headers, further mapping the first document subsection headers relative to the second document subsection headers to establish a header mapping; and causing an output of at least one of the first document subsection headers to be juxtaposed relative to an output of second document subsection headers mapping thereto, to visually emphasize said header mapping, on a computerized output device, wherein: said identifying substantial similarities therebetween includes identifying substantial similarities between bodies of said first and second document subsections.