“…Furthermore, multimodal interfaces can be used to provide customizable digital content and scenarios (White et al, 2007) while, on the other hand, they can bring improvements by combining information derived from audio and visual cues (Krahnstoever et al, 2002). Acquisition of knowledge is also augmented through the use of such multimodal MR interface compared to a traditional WIMP-based (Windows, Icons, Menu and Pointer) interface (Giraudeau and Hachet, 2017). In fact, one example implementation of a mind-map based system reported in Miyasugi et al (2017) allows multiple users to edit a mind map by using hand gestures and voice input and share it through VR.…”