mutt(1) on Linux
The text 9b2db00c3c20, as Debian 11 (Bullseye) shipped it.
The Mutt Mail User Agent
Flags it lists
-
-- -
-D -
-E -
-R -
-Z -
-h -
-n -
-p -
-v -
-vv -
-x -
-y -
-z