Crossword Clue:

to foreshadow or be a precursor of to herald

AnswerCrossword Clue
HIDDENGEMMasterpiece waiting to be found ... or a hint to the words in the circled letters
TANKTOPSleeveless summer wear, or what each answer to a starred clue might be said to have
DEBUGGINGCorrecting, in a way ... or what would need to be done to remove the things hidden in the answers to starred clues?