NYT Crossword Tips
Tip: Use ? for unknown answer letters, e.g. AN??ER. Use the space bar to enter ? quickly.

Clue: "Opening at the post office ... or, when read as three words, a hint to the answers to the starred clues"

"Opening at the post office ... or, when read as three words, a hint to the answers to the starred clues" is a New York Times crossword puzzle clue that we have seen 1 time.
Possible answer
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