<panel size='400' color='0'>
    <label id='sensitivity_label'>-</label>
    <trackbar id='sensitivity_track' 
              min='0.1' max='10' value='2' step='0.1'
              consumer='change_sensitivity'>
    </trackbar>
    <panel id='bindings_panel' size='380,204' padding='2' interval='1' max-length='350' color='#0000004C'>
        <!-- content is generated in script -->
    </panel>
</panel>
