Page: 
Source: 
p. 2, b. 15-32
p. 1, b. 1-14
p. 2, b. 15-32
p. 3, b. 33-50
p. 4, b. 51-69
Main text
Main text
AT - Autograph of a fragment
AW - Presentation Autograph
CDP - Copy for Delfina Potocka
GC - Gutmann's Copy
FE - French edition
FE1 - First French edition
FE2 - Corrected reprint of FE1
FED - Dubois copy
FEJ - Jędrzejewicz copy
FES - Stirling copy
GE - German edition
GE1 - First German edition
GE1a - Corrected reprint of GE1
GE1b - Flawed impression of GE1
GE2 - Second German edition
GE3 - Revised impression of GE2
EE - English edition
EE1 - First English edition
EE2 - Corrected reprint of EE1
EE3 - Revised impression of EE2
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Graphic ambiguousness
Interpretations within context
Differences between sources
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Corrections & alterations
Source & stylistic information
Notation
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Pitch
Rhythm
Slurs
Articulation, Accents, Hairpins
Verbal indications
Pedalling
Fingering
Ornaments
Shorthand & other
Differences
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AT - Autograph of a fragment
AW - Presentation Autograph
CDP - Copy for Delfina Potocka
GC - Gutmann's Copy
FE - French edition
FE1 - First French edition
FE2 - Corrected reprint of FE1
FED - Dubois copy
FEJ - Jędrzejewicz copy
FES - Stirling copy
GE - German edition
GE1 - First German edition
GE1a - Corrected reprint of GE1
GE1b - Flawed impression of GE1
GE2 - Second German edition
GE3 - Revised impression of GE2
EE - English edition
EE1 - First English edition
EE2 - Corrected reprint of EE1
EE3 - Revised impression of EE2
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Important
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  b. 18-20

Slur in AT

Slurs in AW (contextual interpretation)

Slurs in CDP, GC (→GE), FE & EE

In AT the slur beginning in bar 18 reaches simply until the end of the manuscript, which perhaps influenced the simplified notation without marking the return of the initial thought of the Etude.
In AW the slur reaches – inaccurately – until the end of bar 17, while bars 18-19 are generally not embraced with a slur. However, it seems that the slur being a brace limiting the range of the first volta was treated by Chopin as phrasing one (similarly the slur of the second volta in bar 20).

Compare the passage in the sources»

category imprint: Interpretations within context; Differences between sources; Corrections & alterations

issues:

notation: Slurs

Missing markers on sources: AT, AW, CDP, GC, FE1, FES, FED, FEJ, FE2, GE1, GE1a, GE2, GE3, EE1, EE2, EE3, GE1b