This file defines how the credits window is shown and also texts with associated pictures (for ToB only).
In BG2 ToB we have:

2DA V1.0
*credi_01
           0           1           2           3           4           5            6           7           8            9           10           11
SWITCH     DEFAULT     DEFAULT     DEFAULT     DEFAULT     DEFAULT     DEFAULT      DEFAULT     DEFAULT     DEFAULT      DEFAULT     DEFAULT      DEFAULT
DEFAULT    73980       73980       0           0           0           0            0           0           0            0           0            0
BMP        credi_02    credi_03    credi_04    credi_05    credi_06    credi_07     credi_08    credi_09    credi_10     credi_11    credi_12     credi_01

Where:
first name after asterisk is the name of BMP resource used at start of credits window
DEFAULT row contains of references to Dialog.tlk with credits contents.
And BMP row contains of references to BMP files shown in credits window.