The ‘crownlets’ (tagin) of the letters are for thought, and they are of the mystery of this verse: (Ex. 35:32) And to think thoughts... etc. And all depend upon the Lower Shekhinah, and She is the totality of all of them.
And in the mystery of א Aleph, you will find cantillation notes and vowel-points and letters. And so it is with each-and-every letter.
And the mystery of the word: Shyn – three ‘crownlets’ above, like Zayins ז of the Scroll of the Torah, in it are inscribed [Var. alluded] crowns (kitrin) and vowel-points and letters, and so it is with each-and-every letter.