The nature of things as they really are, behind the appearance of surface phenomena or ordinary baseline consciousness. Depending on one's philosophical or memetic inclination, may refer to mundane physical existence, to a series or multiplicity of physical, metaphysical, or toposophic grades, or to a monistic concept of the Absolute Reality.
Enhanced Reality (ER) - Text by M. Alan Kazlev after the original in Anders Sandberg's Transhumanist Terminology Information Age to present. A personalized view of reality, the result of filtering, translation, and addition of new perceptions, such as annotations, information or virtual objects; essential for any sapient being to function in most of the civilized galaxy, and interact with all but the most basic tech. Unlike VR, which is immersive and only deals with virtual objects, ER involves improved interaction with real objects and situations, in addition to virtual objects.