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. 63

composition: WN 37, Lento con gran espressione

..

There is no accidental before the 6th L.H. quaver in A1, CJ 7 CK. The inaccuracy, frequent in Chopin's works, was corrected in CB & EL.

category imprint: Interpretations within context; Differences between sources

issues: Accidentals in different octaves , Inaccuracies in A , Balakirev's revisions , Revisions in EL

b. 64

composition: WN 37, Lento con gran espressione

..

The final C in the L.H. is notated in A1 as a minim, which is an obvious mistake.

category imprint: Interpretations within context; Differences between sources

issues: Rhythmic errors , Errors of A