4 (c) 1996,97 Han-Wen Nienhuys
13 /// administration of current key
15 Array<int> accidentals;
20 Array<int> read(Array<Scalar> );
21 Array<int> oldkey_undo(Array<Scalar>);
24 void set(int i, int acc);
25 int acc(int i) { return accidentals[i]; }
28 /// administration of accidentals