“…Further, while being immersed in XR environments, end-users can experience simulated scenarios free from the limitations of physical contexts such as user status and time. Users can revisit what happened in the past via in-situ XR visualizations of human activities [13,30,52] and interactions [73,99], or virtually immerse into other times and spaces [72,94,108]. Finally, through immersive authoring [45], users can intuitively program and author XR applications from within the target deployment environment [38,65,66,105], which enables a real-time and seamless transition between authoring and testing.…”