elm(1) on Linux
The text 2b1df8dca46b, as Debian 1.2 (Rex), Debian 1.1 (Buzz) shipped it.
an interactive mail system
Flags it lists
-
-? -
-K -
-a -
-c -
-d -
-f -
-h -
-i -
-k -
-m -
-s -
-t -
-v -
-z