+@cindex searching documentation efficiently
+@cindex looking for a subject in documentation
+ If you are looking for a certain feature, but don't know where
+exactly it is documented, and aren't sure of the name of a
+related command or option, we recommend trying these methods. Usually
+it is best to start with an apropos command, then try searching the
+manual index, then finally look in the FAQ and the package keywords.
+
+@table @kbd
+@item C-h a @var{topic} @key{RET}
+This searches for commands whose names match @var{topic}, which should
+be a regular expression (@pxref{Regexps}). Browse the buffer that this
+command displays to find what you are looking for. @xref{Apropos}.
+
+@item M-x apropos @key{RET} @var{topic} @key{RET}
+This works like @kbd{C-h a}, but it also searches for user options and
+other variables, in case the feature you are looking for is controlled
+by an option, not a command. @xref{Apropos}.
+
+@item M-x apropos-documentation @key{RET} @var{topic} @key{RET}
+This searches the @emph{documentation strings} (the built-in short
+descriptions) of all variables and functions (not their names) for a
+match for @var{topic}, a regular expression. @xref{Apropos}.
+
+@item C-h i d m emacs @key{RET} i @var{topic} @key{RET}
+This looks up @var{topic} in the indices of the Emacs on-line manual.
+If there are several matches, Emacs displays the first one. You can then
+press @key{,} to move to other matches, until you find what you are
+looking for.
+
+@item C-h i d m emacs @key{RET} s @var{topic} @key{RET}
+Similar, but searches for @var{topic} (which can be a regular
+expression) in the @emph{text} of the manual rather than in its
+indices.
+
+@item C-h F
+This brings up the Emacs FAQ, where you can use the usual search
+commands (@pxref{Search}) to find the information.
+
+@item C-h p
+Finally, you can try looking up a suitable package using keywords
+pertinent to the feature you need. @xref{Library Keywords}.
+@end table
+
+ To find the documentation of a key sequence or a menu item, type
+@kbd{C-h C-k} and then type that key sequence or select the menu
+item. This looks up the description of the command invoked by the key
+or the menu in the appropriate manual (not necessarily the Emacs
+manual). Likewise, use @kbd{C-h C-f} for reading documentation of a
+command.
+