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. 91

composition: WN 17, Polonaise in B♭ major

No marking in JC & EF

 in PE

category imprint: Interpretations within context; Differences between sources

b. 92-93

composition: WN 17, Polonaise in B♭ major

Markings in JC

Our suggestion

category imprint: Interpretations within context; Differences between sources

b. 92

composition: WN 17, Polonaise in B♭ major

No slurs in JC & EF

Slurs in PE

..

We consider the slurs of PE as almost certainly authentic.

category imprint: Differences between sources

b. 92

composition: WN 17, Polonaise in B♭ major

b1 in JC & EF

g1 in PE

category imprint: Differences between sources

b. 93

composition: WN 17, Polonaise in B♭ major

g3 in JC & EF

e3-g3 in PE

category imprint: Interpretations within context; Differences between sources