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. 77

composition: Op. 30, Mazurka in D♭ major

..

The cautionary flat to E is present in FE and EE. In FC one can see a deletion in this place, most probably of a ; however, in GE it was reintroduced.

category imprint: Differences between sources; Corrections & alterations

issues: GE revisions , Cautionary accidentals , Alterations in CF

b. 86

composition: Op. 30, Mazurka in D♭ major

..

In the main text we omit the Chopinesque but unjustified cautionary  to g1. It was only EE that omitted this accidental.

category imprint: Differences between sources; Editorial revisions

issues: EE revisions , Cautionary accidentals , Last key signature sign

b. 87

composition: Op. 30, Mazurka in D♭ major

..

In the main text we include the cautionary  to b1, most probably added to FC (→GE) by Chopin.

category imprint: Differences between sources; Corrections & alterations

issues: Authentic corrections of FC

b. 89

composition: Op. 30, Mazurka in D♭ major

..

We add a cautionary  before e2 in the main text.

category imprint: Editorial revisions

b. 93

composition: Op. 30, Mazurka in D♭ major

No accidental above  in sources

[] suggested by the editors

..

As in analogous bar 23, the missing  specifying the sound of the top note of the mordent as c3 is probably Chopin's inaccuracy. However, a version with c3 cannot be completely ruled out. 

category imprint: Interpretations within context; Editorial revisions