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julieWith a Cracker aJack, I'd be more likely to say "no stains." CleaN MEANS NO MARKS, EXTRANEOUS, NO DIRT FROM BEING HANDLED, NO CORNERS WHICH HAVE GOTTEN ROUNDED AND ALLOWED DIRT TO CREEP INTO THE EDGES--JUST CLEAN! other description is also necessary--centering, register, corners, color, creases, wrinkles. But clean means--clean.
It's not vague when used with all those other things!