1. A computer-implemented method for facilitating accurate review of a document comprising the steps of: manipulating, by the computer a scanned image of the document, indicating to a reader portions of the document which have been already reviewed in a previous or master document, and manipulating the image of the document while preserving its fidelity, wherein the step of manipulating the image includes highlighting or de-emphasizing portions of the image, wherein the step of highlighting or de-emphasizing portions of the image includes putting a colored or textured background behind the image in 3-dimensional space.