The variable @var{viper-read-buffer-function} controls which function is
actually used to read the buffer name. The default is @code{read-buffer},
but better alternatives are also available in Emacs (e.g.,
-@code{iswitchb-read-buffer}).
+@code{ido-read-buffer}).
@vindex @var{viper-read-buffer-function}
@item :B
Like @kbd{:b}, but the meaning of @var{ex-cycle-other-window} is reversed.