In GE and – probably on the basis thereof – in EE2 (→EE3), cautionary sharps were added before g
1 and f1. The latter was added also in FEH. In the main text, we also add a 
before a1.
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category imprint: Differences between sources; Editorial revisions
issues: Annotations in teaching copies, EE revisions, GE revisions, Cautionary accidentals, Annotations in FEH
notation: Pitch