This file determines the initial area when the game starts and location of the screen view.
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 IWD2 we have:

2DA V1.0
BADVAL
                       VALUE
START_AREA             AR1000
START_XPOS             2390
START_YPOS             860
START_AREA_EXPANSION   AR9000
START_XPOS_EXPANSION   0
START_YPOS_EXPANSION   0