Reference

cwdaemon(8) on Linux

The text 07d1856f33aa, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.

morse daemon for the serial or parallel port

cwdaemon(8) on Linux now