The NomeOut patch is a simple m4l plugin used to get MIDI data from one place to another in a Live set. It is basically a 'receive' port that can route data that is sent from a mod in a different location that has its ouput set to 'Nomeout'.
To use a Nomeout, simply place it on a MIDI track and select the channel you want it to receive from. The Nomeout plugin will receive data from any mod with a matching output channel, and its ouput set to 'Nomeout'.
Turning on 'MIDI Thru' will cause MIDI data arriving at the patches input to be mirrored to its ouput and merged with the data that is sent from any Nome send channels.