System and method for processing printed marking

A processing system marked printed, comprising: an image sensor matrix area (206) configured to sense an image (100) of a form that is in free space; and a processor (212) configured to interpret at least one marking in the image; at least one light source configured to emit light that indicates a predetermined position with respect to the image (206) sensor placement purposes printed; wherein the predetermined position includes a plurality of predetermined positions; wherein the plurality of predetermined positions includes an optimal position; and wherein the processor (212) is configured to determine a difference between an actual placement position of the form and the optimal position, and interpret the at least one marking based on the determined difference.