Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Notation
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


b. 6-8

composition: Op. 10 No 10, Etude in A♭ major

..

The cautionary  before e2 at the beginning of bar 6 was added in a proofreading of FE (→GE,EE). In the main text we still add a few cautionary signs in bar 8 – flats before a2 on the 3rd and a1 on the 5th quavers, as well as a  before f2 on the 6th quaver. The flats were already added in GE2 (→GE3GE4), while the first of them also in EE4.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , GE revisions , Cautionary accidentals , Authentic corrections of FE

b. 7-8

composition: Op. 10 No 10, Etude in A♭ major

..

The natural raising a1 to a1 in bar 7 and the  returning d1 in bar 8, omitted in A, were added in a proofreading of FE (→GE,EE).

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Omissions to cancel alteration , Authentic corrections of FE , Inaccuracies in A

b. 7-8

composition: Op. 10 No 10, Etude in A♭ major

No fingering in A (→FEGE)

Fingering in EE

..

The fingering added by Fontana in EE naturally follows from the figurations.

category imprint: Differences between sources

issues: EE revisions

b. 7-8

composition: Op. 10 No 10, Etude in A♭ major

Crotchets in A

Quavers in FE (→GE,EE)

..

Lack of extensions of c1 and b in FE (→GE,EE), written in A in bars 7 and 8, is most probably an oversight of the engraver.

category imprint: Differences between sources

issues: Inaccuracies in FE

b. 7-8

composition: Op. 10 No 10, Etude in A♭ major

No pedalling in A

Pedalling in FE (→GE,EE)

..

Chopin added the pedalling of these bars while proofreading FE (→GE,EE).

category imprint: Differences between sources

issues: Authentic corrections of FE