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?