MOCK-UPS ARE USED TO LOCALIZE RESOURCES WITHOUT DEFINING FORM. HTML was used to layout the modular structure of a co-branded custom web site builder for TruServ's franchise owners. Each page resource is indicated by a compound, Lego-style icon. The icons indicate both the type of content (overlaid small icons) and its source (blue-corporate, red-hub, yellow-mainframe, white-external). Default items are marked with pale yellow backgrounds. This multidimensional display helped both the marketing and IT departments better visualize the proposed system requirements.