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. 317-318

composition: Op. 21, Concerto in F minor, Mvt III

..

In Morch Chopin shortened the value of the g-e1-b1 chord in violins and violas to a crotchet – originally, it lasted almost two bars, same as the bass note of the C-c chord, held by cellos and double basses.

category imprint: Corrections & alterations; Source & stylistic information

issues: Accompaniment changes

b. 318

composition: Op. 21, Concerto in F minor, Mvt III

..

In the main text we add a cautionary  before g3.

category imprint: Editorial revisions

b. 319

composition: Op. 21, Concerto in F minor, Mvt III

..

The cautionary flat before dwas added in GE (→FEEE). It may be a revision; however, it is worth observing that four bars later, a corresponding sign in an analogous figure is written already in A

category imprint: Differences between sources

issues: GE revisions , Cautionary accidentals

b. 323

composition: Op. 21, Concerto in F minor, Mvt III

..

The cautionary flat before bwas added in the proofreading of FE (→EE) as well as in GE2. In the case of FE, one cannot exclude Chopin's intervention, although the revision of GE2 proves that such an addition could have also been performed by the reviser.

category imprint: Differences between sources

issues: GE revisions , Cautionary accidentals , FE revisions

b. 324

composition: Op. 21, Concerto in F minor, Mvt III

 in A & GE2

No sign in GE1 (→FEEE)

..

The missing  hairpin in GE1 (→FEEE) is most probably a result of the engraver's oversight. The sign was restored in GE2.

category imprint: Differences between sources

issues: Errors in GE , GE revisions