* doc/emacs/help.texi (Name Help): Mention shortdoc.
@kbd{C-h f} command if you don't really want to view the
documentation.
+@findex shortdoc-display-group
+ You can get an overview of functions relevant for a particular topic
+by using the @kbd{M-x shortdoc-display-group} command. This will
+prompt you for an area of interest, e.g., @code{string}, and pop you
+to a buffer where many of the functions relevant for handling strings
+are listed.
+
@kindex C-h v
@findex describe-variable
@kbd{C-h v} (@code{describe-variable}) is like @kbd{C-h f} but