Physical markup language
Physical Markup Language (PML) is a form of markup language for communicating a description of physical environments and the objects within them, their relationships to you, each other and the space. Within a location the devices controlled by the PML language act as parts of a browser. Together they render the experience. Each device contains a component that interprets the PML related to the devices’ capabilities. “Your room is the browser” So for example lights will contribute based on their strengths (light levels and colours) while a hi-fi will concentrate on rendering audio material.