Pigale, ginge has explained it at POST 49. I gave a def in my clue but ginge's was more subtie with his use of ' is of' so in my opinion didn't need a direct def as it was more of a well hidden instruction/leader to indicate that one part was the anagram of the other thus being itself an example,
Great clue ginge, very clever, well done.
Well spotted and Cheers ixion.