<hbox>
    <vbox>
        <label text="Waveform"/>
        <combo param="mode" />
        <label/>
    </vbox>
    <vbox>
        <label param="pulsewidth"/>
        <combo param="pulsewidth"/>
        <label />
    </vbox>
    <hbox spacing="5" homogeneous="1">
        <vbox>
            <label param="amount" />
            <knob param="amount" />
            <value param="amount" />
        </vbox>
        <toggle param="bypass" icon="bypass"/>
    </hbox>
</hbox>
