functionality - the act of presenting a Perform or even a piece of songs or other entertainment; "we congratulated him on his effectiveness on the rehearsal"; "an motivated overall performance of Mozart's C small concerto" Haptic Illusions - Haptic illusions are developed by mixing force cues with geometric cues https://mu-season-1974050.blogsuperapp.com/36339856/little-known-facts-about-illusion-of-kundun-mu-online