#### key-signature-interface

A group of accidentals, to be printed as signature sign.

##### User settable properties:

`c0-position` (integer)
  An integer indicating the position of middle C.
`new-accidentals` (list)
  List of `(`pitch`.` accidental`)` pairs.
`old-accidentals` (list)
  List of `(`pitch`.` accidental`) pairs.`

This grob interface is used in the following graphical objects: KeySignature

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