1. AFSNIT CONCEPTS AND ABBREVIATIONS We use a number of abbreviations: • VR – short for Virtual Reality. • AR – short for Augmented Reality. • XR – an umbrella concept for all media intended to mediate users' experience of reality and which are based on a similar technological foundation. These media include Virtual Reality, Augmented Reality, Mixed Reality, and Merged Reality. The ‘x’ in XR refers to a variable or an unknown, whereas ‘R’ refers to Reality. • IxD – is an abbreviation for Interaction Design. A more detailed review of the difference between VR, AR and XR can be found in the section: Understanding VR 4
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