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. 66

composition: Op. 45, Prelude in C♯ minor

Less likely reading of the slur in FE1

More likely reading of the slur in FE1

Slur in FE2 & EE1

Slurs in GE & EE2

..

According to us, the end of the slur in FE1 is printed inaccurately; the slur in bar 67, which is in the next line, suggests to continue the slur from the previous bar. However, both in FE2 and EE it was the scope of the slur in bar 66 that was assumed as the correct one. Moreover, in those editions the whole sign was moved under the notes, which is almost certainly contrary to the notation of [A1]. The slurs of GE present probably a slightly different version of this place in [A2]. The version of EE2 is a compilation of the notation of EE1 and GE.
In the main text we give the most probable interpretation of the slur of FE1; we consider that version the closest to the authentic notation among all source versions.

category imprint: Graphic ambiguousness; Interpretations within context; Differences between sources

issues: EE revisions , Inaccuracies in FE , Placement of markings , FE revisions

b. 66

composition: Op. 45, Prelude in C♯ minor

Graphical arrangement in FE (→EE)

..

The sources differ here in the notation of the 2nd half of the bar, which can reflect layout differences between the autographs. In the main text we give the notation of FE (→EE), in which the wave of quavers reaches smoothly the final written appoggiatura in bar 67.

category imprint: Differences between sources

b. 66

composition: Op. 45, Prelude in C♯ minor

Crotchet g in FE (→EE1)

Dotted crotchet in GE & EE2

..

In the main text we give the more precise notation of GE. Lack of a dot in FE (→EE1) may be a result of the engraver's inattention. In EE2 a dot was added on the basis of the version of GE.

category imprint: Differences between sources

issues: Inaccuracies in FE

b. 66

composition: Op. 45, Prelude in C♯ minor

..

In the sources there is a cautionary  before a. We also add a  before f, which seems to be equally justified.

category imprint: Editorial revisions; Source & stylistic information

issues: Cautionary accidentals

b. 67-74

composition: Op. 45, Prelude in C♯ minor

 in FE (→EE)

Our variant suggestion

..

Placing the  mark in bars 39-40 and analogous displays consequent discrepancies between GE and FE (→EE). According to us, both pedalling concepts are authentic and can be successfully applied in performance practice. Due to that fact, we propose a text in which they are juxtaposed in the variant form.

category imprint: Differences between sources