Etiquette for other people's signatures in responses

[Brian Mearns]

Hey, I'm relatively new to PGP and I just wanted to get some feedback
on the proper etiquette for quoting signed messages in responses.
Clearly, it's inappropriate to edit a person's response if they're
signed it, but is it considered rude to remove their signature from
the message in the response? For instance, if I did just want to
include part of their message in the response, could I clip that part
out and delete the signature?

Thanks,
-Brian

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