left of the notification title, but only if the @code{:title} parameter
(see below) is also specified and is a string.
-@item :timeout @var{timeout}
-@var{timeout} is the time in seconds after which the notification
-disappears. The value can be integer or floating-point. This is
-ignored on Vista and later systems, where the duration is fixed at 9
-sec and can only be customized via system-wide Accessibility settings.
-
@item :title @var{title}
The title of the notification. If @var{title} is a string, it is
displayed in a larger font immediately above the body text. The title