Have battled with following clues - any assistane greatly appreciated!!
26 D Fringe region of partial darkness surrounding the perfect or darker shadow cast by an opaque object, as in an eclipse 8 letters P---U-B-A
7 D Difference in pitch between 2 notes either sounded simultaneously (harmonic) or in succession (melodic) 8 letters I------L - is it interval?
12 A In computing a pice of code identifying the location of stored information 7 letters A.....S