Select: 
Category
All
Graphic ambiguousness
Interpretations within context
Differences between sources
Editorial revisions
Corrections & alterations
Source & stylistic information
Articulation, Accents, Hairpins
All
Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Importance
All
Important
Main


Articulation, Accents, Hairpins

b. 21

composition: Op. 28 No. 4, Prelude in E minor

..

In A one can see a crossed-out long accent over the e1 minim. According to us, it is likely that the mark was replaced by a  hairpin (cf. the Prelude No. 3 in G Major, b. 17-18).

category imprint: Corrections & alterations; Source & stylistic information

issues: Corrections in A , Deletions in A