3. The computer-implemented method of claim 2 , wherein establishing the sub-documents comprises providing access to the pages via a page writer interface and the method further comprising rendering the sub-documents by providing access to the pages via a page reader interface.
2. The computer-implemented method of claim 1 , wherein establishing the document sequence comprises providing access to the sub-documents via a fixed document writer interface and the method further comprising rendering the document sequence by providing access to the sub-documents via a fixed document reader interface.