User-Driven Documentation: From Usability Testing to User Guide 
Rockwell Software is a $90-million company specializing in plant automation software. Offices in West Allis, Wisconsin, and Mayfield Village, Ohio allow technical communicators to work closely with development teams to design, test, and release usable, consistent software and information products. While Rockwell Software’s information development process is a multi-faceted endeavor, this paper focuses on the following three steps we implement to create our information products: interviewing customers to establish information guidelines, conducting usability tests, and writing Getting Results guides.
Butler, Scott A., Jennifer L. Giordano and Myron M. Shawala III. STC Proceedings (1999). Articles>Documentation>User Centered Design>Usability