“(…) the process of creating style guides and implementing processes for ensuring that a product is consistent in a number of dimensions” (Chauncey E. Wilson – Usability Interface / STCUsability SIG)
“(…) a technique that enables technical and non-technical personnel to cooperatively design user interfaces for GUI and Web applications.” (Information & Design)
“A facet is a clearly definied, mutually exclusive, and collectively exhaustive aspects, properties or characteristics of a class or specific subject” (Ranganthan: Ahead of his Century)
“Scalable interface design ensures that interface development takes account of the need to change over time.” (Tom Farrell – Frontend.comUsability Center)
“Universal usability and design involves understanding how users attempt to accomplish tasks using a variety of technologies in different organizational and social contexts” (Brad Mehlenbacher – NC State University)