This file determines the initial area when the game starts and location of the screen view for the Black Pits campaign.
The first column is filled with th identifiers AREA, XPOS and YPOS, with entries for normal, tutorial and multiplayer game modes. AREA defines the start area, XPOS and YPOS determine the location of the screen view. The second one holds entries specifying values for the first column.

In BG2EE we have:

2DA V1.0
BADVAL
                    VALUE      
START_AREA          OH8000     
START_XPOS          2
START_YPOS          2
START_AREA_TUTORIAL AR0015     
START_XPOS_TUTORIAL 607        
START_YPOS_TUTORIAL 660        
START_AREA_MP       OH8000
START_XPOS_MP       2
START_YPOS_MP       2       
START_XP            500000          
START_XP_CAP        8000000