The 
signs in GC and FE may be considered to be equal variants. Due to the reasons discussed in bar 16, in the main text we give the version of FE. The absence of the sign in GE1 is a clear mistake, inaccurately (arbitrarily) corrected in the subsequent GE.
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category imprint: Interpretations within context; Differences between sources
issues: Scope of dynamic hairpins, Errors in GE, GE revisions
notation: Articulation, Accents, Hairpins