In this configuration file, I've discovered the #' operator, which I did not know, used as:

(add-hook 'LaTeX-mode-hook #'flyspell-mode)

I'm wondering what is the difference with writing just

(add-hook 'LaTeX-mode-hook 'flyspell-mode)

The only documentation I could find about this #' operator hints that it may have some effect when the code is byte-compiled, but I don't understand how. Is there any difference in this case? If yes, how can I observe it?


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