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### 12.1 How do I change the included text prefix in mail/news followups?

If you read mail with Rmail, set the variable `mail-yank-prefix`. For Gnus, set `message-yank-prefix`. For VM, set `vm-included-text-prefix`. For mh-e, set `mh-ins-buf-prefix`.

For fancier control of citations, use Supercite (see the Supercite Manual).

To prevent Emacs from including various headers of the replied-to message, set the value of `mail-yank-ignored-headers` to an appropriate regexp.