|If you are unfamiliar with ispell, please see How can I spell check a file or document?.|
You can run ispell inside an Emacs buffer with the command:
Now the following commands are available for the duration of your emacs session:
M-x ispell-word - Checks word
M-x ispell-buffer - Checks buffer (current file)
M-x ispell-region - Checks region
ispell functions normally inside Emacs, although it uses the minibuffer for commands.