innd(8) on Linux
The text 64d80b6e3e22, as Debian 9 (Stretch) shipped it.
InterNetNews daemon
Flags it lists
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-4 -
-6 -
-C -
-H -
-N -
-P -
-S -
-T -
-X -
-a -
-c -
-d -
-f -
-i -
-l -
-m -
-n -
-o -
-r -
-s -
-t -
-u