Oblivion Mod:Mod File Format/LVSP

An LVSP record defines a leveled spell. There is an LVLO subrecord for each entry in the leveled list.

Subrecord	Type	Info
EDID	zstring	Editor ID
LVLD	byte	Chance none
LVLF	ubyte	Flags 0x01 = Calculate from all levels <= player's level 0x02 = Calculate for each item in count 0x04 = Use all spells
LVLO	short	Level
	ubyte[2]	Unknown
	formid	Item form ID
	short	Count
	ubyte[2]	Unknown

Some of the older LVSP records do not have an LVLF subrecord and instead use the high-order bit of the LVLD subrecord for the "calculate from all levels <= player's level" flag.