Here are the possible solutions for puzzle book feature clue
Answer
Clue
Relevancy
meta
Clue
Puzzle-within-a-puzzle puzzle
Definition
(US) concerned with cultural conventions; (of an artistic work) self-referential
maze
Clue
Puzzle book feature
Puzzle-book feature
Child's puzzle book feature
Definition
to bewilder
fruitfilling
Clue
Pie feature, or feature of this puzzle's other four longest answers
asif
Clue
Valley girl's "yeah, right" [IMPORTANT: SEE THE 'NOTE' (above) for key info about this week's puzzle and SEE THE LAST CLUE DOWN for the explanation of last week's puzzle.]
diacritic
Clue
Mark that appears four times in this puzzle (hint: the baseball player who's the answer to this puzzle uses one, too)
Definition
distinguishing
four
Clue
Number of times this puzzle's theme word appears diagonally in the grid (to complete the puzzle, shade those words plus the Down answers that begin where they meet)