BSP Node Array
File id	$00	12	File id
Level id	$04	17	Level id
Not used	$08	1022	Not used
Packages	$1E	2	Amount of packages that follow
*Package		$20	$1E	2	12
Unknown	$00	3	Unknown
High bit	$03	1	High bit
Unknown	$04	4	Unknown
Unknown	$08	4	Unknown; always the same