asmodem(1x) on Linux
The text 5c37a4fb7d87, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it. The page shows this text now.
AfterStep Modem
Flags it lists
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-d -
-h -
-p -
-r -
-s -
-u