CCCWC April competition voters’ comments on Clue no. 58

A clue to OPEN.
2 comments refer to this clue (from 2 competitors, 0 others)

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Comments on the clue

1.	"Open" is part of the expression, not the whole expression "(an) open book"
2.	Does the 2nd def work? The figurative open book collapses in on itself when applied specifically to a book.