The Science of Safety | Usability Mapping is usability engineering for documentation. Based on three decades of research and used by leading organizations world-wide, Usability Mapping makes end-user documentation safer and more usable by making it easier to find information; understand it; and use it correctly. If you are at all concerned about reducing safety incidents, minimizing support calls or making sure end users get the most from your product, you need to engineer usability into your documentation.