From the readme.txt:
[tt]
Clockbox V1.0 © 2005 Thorsten Klose (tk@midibox.org)
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This application sends a MIDI clock and outputs a 24ppqn signal at CORE::J14
from 48 to 255 BPM
It is also capable of sending the MIDI song position to sequencers which are
able to parse this message (F2 pos_L pos_H)
The user interface consists of an encoder for BPM selection,
a Stop/Pause/Play/Re