* doc/emacs/custom.texi (Keymaps): Mention `C-h b' here (bug#21653).
such as @kbd{C-a} also get their standard meanings from the global
keymap. Commands to rebind keys, such as @kbd{M-x global-set-key},
work by storing the new binding in the proper place in the global map
-(@pxref{Rebinding}).
+(@pxref{Rebinding}). To view the current key bindings, use the
+@kbd{C-h b} command.
@cindex function key
Most modern keyboards have function keys as well as character keys.