BG1, BG1: TotS, BG2, BG2: ToB, PST, IWD, IWD:HoW, IWD:TotL, IWD2

This file format allows files to be transferred between IE installations, while keeping strrefs intact. TBGN caters specifically for NPC (i.e. adding information to the GAM file).

Overall Structure:

• Header
• NPC Headers

Offset	Size (datatype)	Description
0x0000	4 (char array)	Signature ("TBGN")
0x0004	4 (dword)	Null
0x0008	4 (dword)	NPC Header Offset
0x000C	4 (dword)	NPC Header Count
0x0010	2 (word)	Infinity Engine ID value 0x01- Baldur's Gate value 0x02- Planescape: Torment value 0x03- Icewind Dale value 0x04- Baldur's Gate II: Shadows of Amn

Offset	Size (datatype)	Description
0x0000	8 (char array)	NPC filename (minus CRE extension)
0x0008	8 (char array)	NPC start area
0x0010	2 (word)	NPC X coordinate
0x0012	2 (word)	NPC Y coordinate