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Pedalling

b. 4

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

 in A & GE2 (→GE3GE4)

No sign in FE (→GE1,EE)

..

The missing  mark is a patent error of the engraver of FE (→GE1,EE), corrected in subsequent GE,s.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , Inaccuracies in FE , GE revisions , No pedal release mark

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

b. 15-16

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

No pedalling in A

Pedalling in FE (→GE,EE)

..

Pedalling was added by Chopin in a proofreading of FE (→GE,EE). See also the note on the lack of  at the end of bar 16.

category imprint: Differences between sources

issues: Authentic corrections of FE

b. 16

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

No sign in A (→FE)

 in GE & EE

..

In this context, the missing  mark is undoubtedly a result of Chopin's inattention, who added pedalling in a proofreading of FE, or – which is more plausible – of the engraver implementing this proofreading. The mark was added both in GE and EE.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , Inaccuracies in FE , GE revisions , No pedal release mark

b. 17-20

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

No pedalling in A

Pedalling in FE (→GE,EE)

..

These bars were not included in the random pedalling of A. Chopin added the indications while proofreading FE (→GE,EE).

category imprint: Differences between sources

issues: Authentic corrections of FE