GE1
Main text
½A - Semi-autograph
A - Autograph of the piano part
Morch - Manuscript of the orchestra part
GE - German edition
GE1 - First German edition
GE1a - Retouched impression of GE1
GE2 - Second German edition
FE - French edition
FE1 - First French edition
FE2 - Corrected impression of FE1
FED - Dubois copy
FEJ - Jędrzejewicz copy
FES - Stirling copy
EE - English edition
EE1 - First English edition
EE2 - Revised impression of EE1
EE3 - Corrected impression of EE2
compare
  b. 21

 written into FED

No indication in #A (→GEFEEE)

() alternatively suggested by the editors

The  indication, added most probably by Chopin in FED, may be considered a more precise version of the notation or a change of the dynamic concept (see the previous note in this bar). 

Compare the passage in the sources »

category imprint: Differences between sources; Corrections & alterations

issues: Annotations in teaching copies, Annotations in FED

notation: Verbal indications

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