The usability process: working with iterative design principles

A discussion of the real-world environment of usability testing in the computer industry leads into a discussion of how the real world constrains the usability process and how the usability specialist can cope with the constraints. The focus is on two major constraints that result from the need to get information to the interface designers early enough so that they can use it: the need to work with incomplete materials, and the short amount of time usually allotted for a usability test iteration. The design of a new documentation model at Microsoft is considered as an example