gtklick(1) on Linux
The text a3c4fd6af32f, as Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze) shipped it. The page shows this text now.
A simple metronome GUI for JACK
Flags it lists
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-h -
-o -
-q -
-r