It is an anagram, and in a way, relates to 22 d,, etc. I've just finished this, and I've found some of the answers very obtuse - but perhaps I've got them wrong. Please post your opinion when you've finished it.
I made the answer"counts", but as I aid in anearlier post on this thread, I found some of thisxword rather obtuse, and in a few cases, can't see the complete wordplay. But, if you've got 17 d, this fits