What does 'tout h et f' mean?

Answer 1

The phrase 'tout h et f' means every [letter] h and [every letter] f. It's an equivalent of saying 'dotting every i and crossing every t', in other words, following proper procedure. In the word-by-word translation, the adjective 'tout' means 'each, every'. The words 'h' and 'f' are the respective letters of the alphabet. And the conjunction 'et' means 'and'.