A user controlled ornamental panel or window, which is useful for a number of applications in which {TAIL ~ the degree} or amount of {HEAD ~ light} passing through the panel is to be controlled 
A user controlled ornamental panel or window , which is useful for a number of applications in which { TAIL ~ the degree } or amount of { HEAD ~ light } passing through the panel is to be controlled
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH