The Clue F1, say
The Answer KEY
The clue "F1, say" refers to the term "key" because "F1" is a function key on a computer keyboard. In this context, "say" suggests that we are looking for a word that represents something related to function keys. The word "key" fits perfectly as it describes both the physical keys on a keyboard and the function of the F1 key. Therefore, "key" is the right answer for the crossword clue.