Skyrim Mod:Mod File Format/AVIF

The AVIF record is Actor Value information.

Most records are simple but the player skills have perk tree graphical information in them as well in field groups (below thick line repeats for each index).

CNAM is listed twice because it means something per group record and also at an individual record level (if no perk groupings). On the perk level, it is the INAM of the perk it connects to in the perk tree (line to). For example, Bullseye (INAM 7) in the Archery tree requires Quickshot OR Ranger, therefore both of those field groups have a CNAM field of 7.

Note: Smithing and Pickpocket are different because the initial CNAM does not match up (Pickpocket would start at Cutpurse) and the AVSK has different data throughout. It's possible the record-level CNAM has a different meaning than assumed.

Perk tree information:

• This does not change prerequisites. Individual PERK records have CTDA for perk requirements that allow you to skip perks if removed.
• 5 coordinates are given for each point along with any lines to other points.

C	SubRecord	Name	Type/Size	Info
+	EDID	editorId	zstring	Editor id
-	FULL	name	lstring	Full (in-game) name
+	DESC	description	lstring
-	ANAM	abbreviation	zstring	Only present on 1Hand/2Hand AV records
+	CNAM	data	uint32	See below, if it has a perk tree: Skill category: 0 - None 1 - Combat 2 - Magic 3 - Stealth if it's not then has large 4byte info (probably what is in the first 4 bytes of AVSK)
-	AVSK	av data?	float[4]	Only present for skills with groupings. Skill Use Mult. Skill Use Offset Skill Improve Mult. Skill Improve Offset
*		perk tree	Perk Sections[]	See below.

Perk Sections

C	SubRecord	Name	Type/Size	Info
+	PNAM	perk	formid	PERK formid, or 0 for the first
+	FNAM	flag?	dword	Most common values are 1 and 0. First perk of a tree has usually huge values.
+	XNAM	x-coord	dword	X Coordinate within the Perk-Grid
+	YNAM	y-coord	dword	Y Coordinate within the Perk-Grid
+	HNAM	horizontal position	float	Horizontal position of the Skill within the already via xnam/ynam set grid.
+	VNAM	vertical position	float	Vertical position of the Skill within the already via xnam/ynam set grid.
+	SNAM	skill	formid	AVIF formid, same one as parent usually. Present whether or not CNAM is.
*	CNAM	connecting line	uint32	ID (INAM field) of destination perk for each line coming from box, can be 0 or multiple
+	INAM	index number	uint32	unique id for the perk box, not necessarily sequential