{HEAD ~ The controller} may provide direction and amplitude control, {TAIL ~ vibration control}, and frequency control to direct the haptic experience 
{ HEAD ~ The controller } may provide direction and amplitude control , { TAIL ~ vibration control } , and frequency control to direct the haptic experience
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH