To VeCrea, yes I wanted to explain...
The way I have to build the N:M relation is not handled by Joomla.
It creates me a problem for 'inventing' the names conventions and coding style.
So I have preferred to dig in what FOF propose with relations and write something that uses the same naming conventions in the vars.
The good thing is FOR YOU !!
So basicaly, N:M are on the way now, and will be released also for N:M in FOF.
FOF is expiremental because it is just a first step-in.
I would like to custom the builder to create a pure FOF component (limited in features, but educational)
For the moment with this step in, I try to support the same functionalities that the present on a Cook basic release.
As I said before, now comes the priority for N:M and even if FOF experimental stays in this way.
It is just a presentation for education purposes. It is gonna evolve.