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


Pitch

b. 2

composition: Op. 10 No 8, Etude in F major

..

In A there are visible traces of deleting the original version of the 1st quaver in the L.H. It seems that its notation did not go beyond the staff, it could have been, e.g., the F-c fifth. 

category imprint: Corrections & alterations

issues: Corrections in A

b. 12

composition: Op. 10 No 8, Etude in F major

Chord in A

Rest in FE (→GE,EE)

..

The chord which opens the bar in A is written without the  before the topmost note, which is an obvious oversight. Chopin resigned from this chord, while proofreading FE (→GE,EE). The traces of its deletion – along with the arpeggio – are clearly visible in the subsequent copies of FE. Cf. bar 13.

category imprint: Differences between sources; Corrections & alterations

issues: Omission of current key accidentals , Errors of A , Authentic corrections of FE

b. 12

composition: Op. 10 No 8, Etude in F major

..

In A there are visible traces of deleting the Gnote. It is unclear whether it was supposed to be a part of the G1-G octave or to be autonomous, instead of of the final version.

category imprint: Corrections & alterations

issues: Corrections in A

b. 14

composition: Op. 10 No 8, Etude in F major

..

We add cautionary flats before b and b3. The revision was already performed in GE2 (→GE3GE4).

category imprint: Differences between sources; Editorial revisions

b. 25

composition: Op. 10 No 8, Etude in F major

B & b2(1) in A (→FEGE)

B & b2(1) in EE

..

Nothing indicates that three naturals raising B to and b2(1) to b2(1), added in EE could be authentic. The reviser probably relied on bars 11-12.

category imprint: Differences between sources

issues: EE revisions