gnome-control-center/capplets/screensaver/screensavers/flame.xml

<?xml version="1.0" encoding="ISO-8859-1"?>

<screensaver name="flame">

    <command arg="-root"/>

    <number _label="Number of fractals to generate."
            _low-label="Iterations:" id="iterations" type="spinbutton"
            default="25" arg="-iterations %" low="1" high="250"/>

    <number _label="Pixels per fractal." _low-label="Less" id="points"
            type="slider" default="10000" arg="-points %" low="1000"
            _high-label="More" high="50000"/>

    <number _label="Speed of Motion." _low-label="Faster" id="delay"
            type="slider" default="2" arg="-delay %" low="1"
            _high-label="Slower" high="500000"/>

    <number _label="Time finished product is shown." _low-label="Faster"
            id="delay2" type="slider" default="2000000"
            arg="-delay2 %" low="100000" _high-label="Slower"
            high="7000000"/>

    <boolean _label="Display screensaver in monochrome." arg-unset=""
             id="monochrome" test="mono" arg-set="-mono"/>

</screensaver>