The notch forms a finger portion on the temple with the outside surface of the temple, and also creates {HEAD ~ a thinned wall section} at the inner surface of {TAIL ~ the temple} opposite the finger portion 
The notch forms a finger portion on the temple with the outside surface of the temple , and also creates { HEAD ~ a thinned wall section } at the inner surface of { TAIL ~ the temple } opposite the finger portion
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH