>Finally found the link I was trying to find: it's at http://www3.ncr.com/product/retail/products/software/OposHome.html. On checking the docs, the Cash Drawer object can recognize the open status, if it's supported by the drawer itself (I've used this functionality), and journal, receipt, and slip printers are supported by the POS Printer object.

What the provide is about a 660 page Word (or PDF) document on this whole concept and standards. No actual control is offered. The MS site looks to be equally interesting to dig through trying to find something of use.