1. An electronic input device for use in annotating a document, comprising: (a) an imaging component for obtaining an image of human-comprehensible content in a paper version of a document sufficient to identify a location in the document; (b) a recording component for recording an annotation to be associated with the identified location in the document; (c) a recognition component configured to analyze the annotation and determine if the annotation includes an electronically-executable instruction; and (d) a data communication component configured to communicate data from the electronic input device to a computer system.