1. A document processing system for processing hardcopy documents, the system comprising: (i) machine-readable data applied to a hardcopy document to be processed in the document processing system; (ii) human-readable data applied to the hardcopy document of the document processing system; and (iii) a processing system, employing manual operations to be undertaken manually by human operators and automated operations to be undertaken by computer processing systems, wherein the machine-readable data comprise document-processing instruction(s) to be executed on the document; and the processing system reads the machine-readable data by use of the computer processing systems, and executes at least part of the document-processing instruction(s) automatically.