| Many of the more complicated Emacs commands include their own sets of help keystrokes. These commands often have their own help functionality, but help is invoked with ? rather than the standard help key. Here is a summary of some popular complex commands and what ? does within each of them: - dired (C-x d)
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You see a list of the most frequently used commands in the minibuffer. This list is far from complete. Type C-h m (for describe-mode) for more comprehensive documentation and C-h b (for describe-bindings) for all the key bindings available to you. - query-replace (M-%)
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You see a *Help* window listing the available commands. Typing C-h does the same thing. This also works with query-replace-regexp. - save-some-buffers (C-x s)
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Behavior is similar to query-replace just described. - list-buffers (C-x C-b)
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You see a *Help* window giving information on buffer menu mode. This command has the same effect as typing C-h m (for describe-mode). - Completion
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When you are responding to a minibuffer prompt with the name of something on which Emacs can do completion, typing ? at any time gives you a *Completions* window with the choices available at that point. Completion is explained in detail later in this chapter.
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