Clutter depends on some settings to perform operations like detecting multiple button press events, or font options to render text.
Usually, Clutter will strive to use the platform's settings in order to
be as much integrated as possible. It is, however, possible to change
these settings on a per-application basis, by using the
<clutter-settings> singleton object and setting its properties.
It is also possible, for toolkit developers, to retrieve the settings
<clutter-settings> properties when implementing new UI
elements, for instance the default font name.
<clutter-settings> is available since Clutter 1.4