Flyspell check entire document upon opening

Question

I have enabled Flyspell in .emacs:

(add-hook 'org-mode-hook 'turn-on-flyspell)

When I open a document and start typing, typos will be underlined. However, when I close and reopen the document, the same error will not be underlined unless I select the word or move over it with the cursors.

Q: Is there a way to recheck (non-interactively) the whole document and underline errors upon opening a document with Flyspell?

Answer 1

M-x flyspell-buffer

Or insert (flyspell-buffer) into org-mode-hook