Line out from H4n during 4 channel recording

[beachbum]

Hi guys, i understand that when I switch the zoom H4n to 4 channel recording, I will be getting two set of wav files, one from the on board stereo and one for the external mic.

But what if i also want to record to the camera at the same time through its line out jack? what is the output from the line out? Will it be the stereo, external mic or mixed?

Any insight is appreciated. Thanks! : )