How to spellcheck all words in a buffer

Question

Is there a way to make a whole spellcheck in a buffer instead of check every word as you type using flyspell, like using aspell command with a file ?

Answer 1

After running flyspell-mode, run flyspell-buffer.

Answer 2

There's (M-x) ispell-buffer which checks entire buffer word by word and prompts on every misspelled word.