zmsh(1) on Linux
The text 18d6ccc636a9, as Debian 3.0 (Woody) shipped it. The page shows this text now.
zmailer shell
Flags it lists
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-C -
-I -
-L -
-O -
-P -
-R -
-S -
-Y -
-a -
-c -
-e -
-f -
-h -
-i -
-n -
-s -
-t -
-u -
-v -
-x