in 
As a result of comparison of the indications of FE in bar 646 and 648-650, we interpret the mark in this bar as a long accent, referring to both hands. The absence of the mark in GE is most probably an oversight of the engraver.
Compare the passage in the sources »
category imprint: Differences between sources; Editorial revisions
issues: Long accents, Placement of markings, Errors in GE
notation: Articulation, Accents, Hairpins
