reference describes data stream tagging page 140 et seq as more fully described in related patent application ser no 08 334 584 data stream tagging is used to identify individual mail pieces and to track them through the printing and inserting process tagging product data streams allows a break up of a data file into logical documents each identifying a particular mail piece or recipient such tagging allows not only the tracking of mail pieces through the printing and inserting process but also allows logical documents like mail pieces to be retrieved viewed and archived in creating the system it is important that devices of all kinds from different vendors should be able to be connected to the mailing system without requiring modifications in addition the system must be extensible that is it should be possible to add services commands and actions without requiring redesign of the system also the system should be based on a client server model to take advantage of the versatility afforded by networks the system should use graphical user interface technology an additional requirement of the system is that it should be portable across different operating systems and types of computing machines finally the system should be configurable that is users should be able to tailor the data in the system to their own management requirements the lmo systems work group has provided a standard to meet all of these requirements each component which may be a device or mail job that is added to or installed in the system must have an accompanying management information format mif file.