The archive itself is loaded during init and unloaded after the game has started.
Actor contains files defining actors.
The Chemical directory contains configuration files for the game's chemistry engine.
The Ecosystem directory contains configuration files for game areas, and for the Placement and AutoPlacement systems (which statically or dynamically spawn actors).
The ELink2 directory contains configuration files for the game's effect link (ELink) system.
The Env directory contains environment files.
The Event directory contains files defining in-game events.
The EventFlow directory contains files defining in-game events and cutscenes.
The Layout directory contains sblarc layout archive files for the game's GUI and HUD. These are used to store UI files (layouts, animations and images).
Map contains files defining the game's map areas and the objects that populate them.
The Mii directory contains files relating to the UMii system for constructing NPC models from parts.
Physics contains Havok physics files.
The SLink2 directory contains files relating to the game's SLink sound link system.
Sound contains audio files.
The Tips directory contains configuration settings for the game's loading screen hint messages.
UI contains files used by the game's HUD and GUI.