EE1
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A comparison with analogous bar 487 proves that two 
marks are supposed to be accents, hence in the main text we give them the form of long accents. In GE3, a more radical change was introduced, since the accents are short, just like in bar 487.
Compare the passage in the sources »
category imprint: Differences between sources; Editorial revisions
issues: Long accents, Inaccuracies in GE, GE revisions
notation: Articulation, Accents, Hairpins