efax(1) on Linux
The text d70d06bbe425, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch) shipped it. The page shows this text now.
send/receive faxes with Class 1, 2 or 2.0 fax modem (Please read the fax man page first.)
Flags it lists
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-a -
-c -
-d -
-f -
-g -
-h -
-i -
-j -
-k -
-l -
-o -
-q -
-r -
-s -
-v -
-w -
-x