no, it isnt all xml, see the new example file i provided in the updated zip file, you will see it looks like this:
3301.igb actors/3301.igb actorskin
50_civilians_male.igb actors/50_civilians_male.igb actoranimdb
hud_head_3301.igb HUD/hud_head_3301.igb model
3301_hud.igb ui/HUD/characters/3301.igb model
there are models, actorskins, etc. all the same things you would find in the package files (.pkg(b) files)
also, what you can do to see the names directly is open an fb that you have with a hex editor, then search for the name of some file, like 3301.igb, a couple of lines further you will see the related name, it will say actorskin
hope that helps