Placing the 
sign only under the 4th demisemiquaver, as it is in A, is musically inexplicable. It is, according to us, related to the lack of space to write the indication at the beginning of the roulade or to the manner of placing indications in the middle of their scope of validity (and not at the beginning), sometimes used by Chopin. Taking that into account, in the main text we move the sign to the beginning of the 2nd half of the bar; a similar interpretation was performed in GE2. (In GE1 (→FE) the placement of the sign was reproduced slightly inaccurately, by shifting it a demisemiquaver to the left, which was changed in EE, probably by accident. We do not reproduce these differences, devoid of practical meaning, in the transcriptions).
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category imprint: Interpretations within context; Editorial revisions
issues: Inaccuracies in GE, GE revisions, EE inaccuracies, Centrally placed marks
notation: Verbal indications