The dynamic display 2 or 3, wherein {HEAD ~ said means} for providing {TAIL ~ relative movement} between said plurality of light sources and said viewable layer comprises: 
The dynamic display 2 or 3 , wherein { HEAD ~ said means } for providing { TAIL ~ relative movement } between said plurality of light sources and said viewable layer comprises :
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH