Patent ID: 8560854

Claim:
A method for implementing paper-like workflow of a compound document, the method comprising: receiving a first formatted message comprising the compound document, the compound document having a first page that is stored as a first page image, first page metadata, a second page that is stored as a second page image, second page metadata and document metadata that includes changes made to the compound document as a whole; extracting the compound document from the first formatted message; providing for display of the first page image of the compound document; capturing one or more input strokes associated with the first page image and timing information describing a time when the one or more input strokes are inputted; adding a log entry to the first page metadata, the log entry including data describing the one or more input strokes and the timing information associated with each input stroke; creating a second formatted message including the compound document; sending the second formatted message; and storing the one or more input strokes and a digital signature used to sign the stroke file as a separate stroke file that is part of the first page metadata and wherein the data describing the one or more input strokes in the log entry comprises a content based identifier for the stroke file.