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b. 107

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In A the  to the topmost note in the 3rd quaver (c2) is missing. The cautionary  to e2 is absent too. Both accidentals were added in GE (→FE,EE,IE), which we include in the main text.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Accidentals in different octaves , GE revisions , Inaccuracies in A

b. 107

composition: (Op. 4), Sonata in C minor, Mvt IV

No marks in A

Wedges in GE (→FE,EE,IE)

..

In this context, the missing wedges in A in the 2nd half of the bar must be considered Chopin's oversight, hence in the main text we include the marks added in GE (→FE,EE,IE).

category imprint: Differences between sources; Editorial revisions

issues: GE revisions

b. 108-109

composition: (Op. 4), Sonata in C minor, Mvt IV

 & > in A, literal reading

Long accents in A, contextual interpretation

 in GE (→IE)

in FE

in EE1

 in EE2

..

All marks in the form of  or of accents entered into A must have the same meaning in this context. This is a very significant argument for the interpretation of such marks we adopted to the entire Sonata (and more). In GE they were reproduced as , which does not differ much from the A notation (except the first and third R.H. marks), yet, according to us, it does not accurately convey their meaning. In the main text we reproduce them in a standardised form as long accents, which better suit the rhythmic, energetic nature of the music and which are closer to the averaged form of the marks entered into A.
The FE and EE1 versions resulted from inaccuracies or mistakes by the engravers, while in the case of EE2, also from inaccurate revision. 

category imprint: Graphic ambiguousness; Differences between sources

issues: Long accents , EE revisions , Inaccuracies in GE , Inaccuracies in FE , Scope of dynamic hairpins , Errors in EE , Inaccuracies in A

b. 110-112

composition: (Op. 4), Sonata in C minor, Mvt IV

..

In A Chopin did not put accidentals to the bottom notes of the octaves at the beginning of bar 110 and in bar 112; on the other hand, he wrote a  to the A minim in bar 110 (unnecessary). GE (→FE,EE,IE) added all the omitted accidentals.

category imprint: Interpretations within context; Differences between sources; Editorial revisions

issues: Accidentals in different octaves , GE revisions , Cautionary accidentals , Last key signature sign , Inaccuracies in A

b. 110

composition: (Op. 4), Sonata in C minor, Mvt IV

3 vertical accents in A

Wedge & 2 accents in GE (→IE)

Dot & 2 accents in FE

2 accents in EE

..

The staccato mark instead of an accent resulted from a mistake by the engraver of GE, who considered the small and careless accent mark to be a wedge. In FE it was reproduced – probably also by mistake – as a dot, while in EE it was most probably overlooked.

category imprint: Differences between sources

issues: Errors in EE , Errors in GE , FE revisions