This document discusses site analysis and diagramming site information for architectural design. It defines contextual analysis as an inventory of existing, imminent and potential conditions on and around a project site. Conducting a thorough contextual analysis informs early design concepts by identifying how a building can meaningfully respond to external site conditions. The document emphasizes that sites are active networks of interrelated factors and introduces the "consequence triangle" model to understand how a building, its users, and the surrounding context impact one another. Effective diagramming of site information is presented as a way to visualize these relationships and inform the design process.