Rapid, Low-Fidelity Prototyping 
In this paper we discuss our experiences using low-fidelity prototyping as a design tool. We describe three efforts that made use of rapid, low-fidelity prototyping and share some of the lessons we learned in doing so. All three of the efforts involve the design of real software products though the prototyping involved different aspects of the software (brand new GUI or new function added to an existing GUI) or the online help information supporting the software.
Jorgensen, Linda B. and Peter D. Pagerey. STC Proceedings (2000). Presentations>Software>Methods