| http://www.w3.org/ns/prov#value | - thereon; FIG. 2 is an enlarged perspective view of part of FIG. 1 showing a portion of the indicating head and a portion of the keyboard upon which it rests; and P16. 3 is a partial section view along line 3-3 of P16. 2 showing an enlarged side sectional view of the indicating head on the keyboard. keyboard of a musical instrument such as a piano or an organ.
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