5.1 live mixing. When routing, what does it means with NON-LFE Amount????

I’m working with a 5.1 mix and I found when you to the Routing page, you select a ch and you can “PAN” it to L, C, R, sL, sR or wherever in the middle of those. But you also have 3 knobs: Divergence / LFE amount / NON-LFE. Does anyone knows what the DIVERGENCE AND THE NON-LFE KNOBS ARE??
Thanks!! Please, I need to know this !!!

It was first noted in the 1.2 Software update manual. Available here:
LFE is Low Frequency Effects, basically, the .1 of 5.1 surround. Divergence is C vs. LR.

My link got eaten up when I hit submit, but the picture is from the manual. FWIW, I didn’t know the answer to this before you posted here, I just google searched: “LFE amount / NON-LFE Allen & Heath”