There are many times that it would be very useful to be able to send a document in a file cabinet out for run in a Document Processing instance. Let's say we have some data presented on a document in both barcode and plain text. First we try to capture by the barcode, and sometimes that doesn't work. We could then set a field value and send the document off for a shot at a Document Processing instance that tries for the text instead. In a similar way, sometimes an anchor won't read right and that throws off the capture. We could send the document off again for a run at a Document Processing instance using different anchoring. In this manner you could chain together sets of Document Processing instances to really wring the most out of the capture process.