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

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

<screensaver name="pedal">

    <command arg="-root"/>

    <number _label="Time to show each picture." _low-label="Shorter"
            id="delay" type="slider" default="5" arg="-delay %"
            low="2" _high-label="Longer" high="30"/>

    <number _label="Maximum number of lines." _low-label="Less"
            id="maxlines" type="slider" default="200"
            arg="-maxlines %" low="15" _high-label="More" high="5000"/>

    <number _label="Time to fade away." _low-label="Shorter"
            id="fadedelay" type="slider" default="20"
            arg="-fadedelay %" low="1" _high-label="Longer"
            high="500000"/>

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

</screensaver>