Not all men against old writer's last words (5)

I believe the answer is:

envoi

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'writer's last words' is the definition.
(closing remarks in a piece of writing)

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(Other definitions for envoi that I've seen before include "Concluding words" , "Second Hebrew letter" , "Author's last words" , "Short concluding stanza" , "Author's final words" .)

I've seen this clue in the Sydney Morning Herald.

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