The document discusses the importance of designing The Globe & Mail's Windows 8 app, as Windows 8 represents the edge of innovation in mobile and cross-platform compatibility. It provides an overview of the Windows 8 design style and principles, including tiles, a grid system, responsiveness, and simple navigation. The document outlines the design process for the app, including researching ideas and competitors, creating a pattern library, developing a shared terminology, and finalizing mockups while challenging conventions.