As user advocate, usability tester, screen designer, and online documentation specialist, the technical communicator is now playing a role in all phases of product development, from initial design to final support. How has this expanded role come about? What kinds of decisions is the technical communicator responsible for? How must the technical communicator interact with other team members, especially in the exciting, interdisciplinary area of “external design”? This article examines the rapidly growing role for technical communicators in the computer industry as members of the external design team.