Conventional abbreviations were used in all manuscripts to write down the repeating figurations, mainly in the L.H. part. FCI features as many as 13 bars (b. 2-6, 14-16, 19-22 and 29) written down in such a way, which constitutes the largest share. It is very likely that it corresponds to the notation of the autograph of a previous version, which Fontana copied, since Chopin was very keen on using such abbreviations, particularly in unofficial manuscripts. This opinion is not challenged by the fact that Fontana used numerous abbreviations in FC (b. 11, 14-16, 19-21, 27 and 29) contrary to the notation of A (abbreviation only in b. 11): he could venture to do that having in mind the text and notation of the earlier autograph.
See also b. 16-29.
Compare the passage in the sources»
category imprint: Differences between sources
issues: Abbreviated notation of A, Fontana's revisions
notation: Shorthand & other