rfcomm(1) on Linux
The text fd06cdd4ee09, as Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
RFCOMM configuration utility
Flags it lists
-
-A -
-E -
-M -
-S -
-a -
-h -
-r