Like in the sentence below. Is the comma correct?
"Most of the editors agreed that the new manuscript "was a vast improvement over the author's first attempt," even though some still thought that nothing could top the original."
No comma is necessary; however, it is permissible to add emphasis. html
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No comma is necessary; however, it is permissible to add emphasis.
(Source which argues it's permissible for emphasis):
https://miamioh.edu/hcwe/handouts/commas/index.html