| http://www.w3.org/ns/prov#value | - Sustain switch 64, which is operated by one of the footpads on footpad panel 14 shown in FIG. 1, is a latching switch, that is, once the foot depresses the footpad associated with sustain switch 64, a circuit changes states and remains in the changed state until such time as the sustain switch 64 footpad is again depressed.
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