[Exim] warn_message_text variable?

I was thinking of specifying the bounce/warn messages in my MySQL servers
along with my other settings, however I noticed there's no mention of a
variable like warn_message_text - just warn_message_file. There's a _text
variable for the bounce messages...

Just wondering if warn_message_text exists (I haven't tried it yet) but
isn't documented? If it doesn't exist, any chances of it being added?

Eli.

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