This completed puzzle has 10 of them, each three letters long, reading diagonally

Question:

Answer:

HIDDENBODYPARTS

Length:

Similar Crossword Questions:

It uses only the 12 letters A, E, H, I, K, L, M, N, O, P, U and W (like eight long answers in this puzzle)
Long-running game show with a feature spelled out clockwise by this puzzle's circled letters
The long entries in this puzzle, vis-Ã -vis "securities"
What you can find in the grid after completing this puzzle, looking up, down, left, right and diagonally, word search-style
This puzzle's long-winded advice, simply put
Phrase whose abbreviation is the key to four long puzzle answers
Staff members, and what the circled letters in this puzzle represent
How to link the 12 letters in this puzzle with a single line to make a picture
Movie title that describes what happened to the five long entries in this puzzle?
Former UN leader HammarskjÃ¶ld [Note: The circled letters comprise a three-word instruction that, when applied to one square in the completed grid, reveals a group who might follow a code of silence]
Speed letters "trapped" in this puzzle
They require reading many letters
Grp. that battles consumer fraud ... or a hint to some much-repeated letters in this puzzle
Reading letters from the end?
Second of a pair of letters swapped six times in this puzzle's theme entries
This weekend's fridge contents, probably, and what's missing from five long puzzle answers?
Urban areas (as hinted at by the circled letters in this puzzle's grid)
Feature of this puzzle's three long Down answers
Distressing letters found 9 times in this puzzle
What this puzzle's long answers each have three of
High-speed letters seen in this puzzle's "connections"
Game in which the puzzle's long answers are pieces
List shortener hidden in eight long puzzle answers
Movie good guys responsible for the circled squares in eight long puzzle answers
Long distance letters