Here is a summary of the defined help commands.

C-h a regexp RET

Display a list of commands whose names match regexp (apropos-command).

C-h b

Display a table of all key bindings in effect now, in this order: minor mode bindings, major mode bindings, and global bindings (describe-bindings).

C-h c key

Print the name of the command that key runs (describe-key-briefly). Here c stands for `character'. For more extensive information on key, use C-h k.

C-h f function RET

Display documentation on the Lisp function named function (describe-function). Since commands are Lisp functions, a command name may be used.

C-h h

Display the `hello' file, which shows examples of various character sets.

C-h i

Run Info, the program for browsing documentation files (info). The complete Emacs manual is available on-line in Info.

C-h k key

Display the name and documentation of the command that key runs (describe-key).

C-h l

Display a description of the last 100 characters you typed (view-lossage).

C-h m

Display documentation of the current major mode (describe-mode).

C-h n

Display documentation of Emacs changes, most recent first (view-emacs-news).

C-h p

Find packages by topic keyword (finder-by-keyword).

C-h s

Display current contents of the syntax table, plus an explanation of what they mean (describe-syntax). See section The Syntax Table.

C-h t

Enter the Emacs interactive tutorial (help-with-tutorial).

C-h v var RET

Display the documentation of the Lisp variable var (describe-variable).

C-h w command RET

Print which keys run the command named command (where-is).

C-h C coding RET

Describe coding system coding (describe-coding-system).

C-h C RET

Describe the coding systems currently in use.

C-h I method RET

Describe an input method (describe-input-method).

C-h L language-env RET

Describe information on the character sets, coding systems and input methods used for language environment language-env (describe-language-support).

C-h C-c

Display the copying conditions for GNU Emacs.

C-h C-d

Display information about getting new versions of GNU Emacs.

C-h C-f function RET

Enter Info and go to the node documenting the Emacs function function (Info-goto-emacs-command-node).

C-h C-k key

Enter Info and go to the node where the key sequence key is documented (Info-goto-emacs-key-command-node).

C-h C-p

Display information about the GNU Project.

C-h TAB symbol RET

Display the Info documentation on symbol symbol according to the programming language you are editing (info-lookup-symbol).

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