Ordinarily, commands that operate on text or move point do not care
whether the text is invisible. However, the user-level line motion
-commands explicitly ignore invisible newlines.
+commands explicitly ignore invisible newlines. Since this causes a
+slow-down of these commands it is turned off by default, controlled by
+the variable @code{line-move-ignore-invisible}.
@node Selective Display
@section Selective Display
The sound file must be in the Sun/NeXT U-LAW format. @var{sound-name}
should be a symbol, specifying the name of the sound. If @var{volume}
is specified, the sound will be played at that volume; otherwise, the
-value of @var{bell-volume} will be used.
+value of @code{bell-volume} will be used.
@end deffn
@defun play-sound sound &optional volume device