1. A system, comprising: an indicia reading terminal comprising an image sensor; wherein the system is operative to, in response to an operator initiated command, capture a frame of image data and process the frame of image data in an attempt to decode a form barcode on a document; wherein the system is operative to determine, from the captured frame of image data, a configuration of the form barcode on the document and, based on the determined configuration of the form barcode identify the form barcode on the document; and wherein the form barcode is decoded as a pre-processing of image analysis to be performed on the document including the form barcode.