Hi bobbycollins, each 4 X 4 square has 9 clues traversing or fully in it.
In each of these 9 clues wordplay gives the original entry" which is nothing" other than the "statement" in the square with the letters outwith the square (for the clues that traverse) forming part of the definitions (once reallocated) when filled with the rearrangement of the 32 letters.
All other clues and entries are normal.
Hope this helps.