ALT as ALT, Meta as Meta and Keymap

[Nicolas Dely]

Hi, (sorry for my bad English, I'm French).
I have a laptop where I have got an azerty/latin0 keyboard.

I've mapped with xmodmap meta on windows key (it work good) and i have an
ALT key too but in emacs or during the init, it thinks that my ALT key is Meta
and I don't want it, I'd rather ALT do Alt. That's why I would like to
know, where alt is defined as Meta, how does the init work? which files
read it first, the order of the mapping key and the priority.

Moreover, I would like to know how to define key in latex mode (add-hook
maybe), that M-a write \alpha, M-D write \Delta or something like that.

Eventually if someone knows how to see emacs keymap easily?

Thanks in advance