Morrowind Mod:Mod File Format/CELL

CELL records contain information about cells (both interior and exterior).

C	Field	Type/Size	Info
+	NAME	zstring	Cell Name. Unlike other NAME fields, this is the localized, human-readable name of the cell, not a language-agnostic ID string. Exterior regions are mostly empty strings; for these, the region name is used in the Construction Set.
+	DATA	struct (12 bytes)	uint32 - Flags 0x01 = Interior 0x02 = Has Water 0x04 = Illegal to Sleep here 0x80 = Behave like exterior (Tribunal) int32 - Grid X int32 - Grid Y
-	RGNN	zstring	Region name (exterior and like-exterior only)
-	NAM5	rgb	Map color (exterior and like-exterior only)
-	WHGT	float32	Water height (interior only)
-	AMBI	struct (16 bytes)	Ambient light rgb - Ambient color rgb - Sunlight color rgb - Fog color float - Fog density
*		Moved Reference[]	Moved references
*		Form Reference[]	Persistent Children
-	NAM0	uint32	Count of Temporary Children
*		Form Reference[]	Temporary Children
Moved Reference
These only appear in mod files when creatures or NPCs are moved from one cell to another; they commonly appear in saved game files as things move around.
+	MVRF	uint32	Reference ID (always the same as the attached FRMR value)
-	CNAM	zstring	Name of the cell the reference was moved to (interior cells only)
-	CNDT	struct (8 bytes)	Coordinates of the cell the reference was moved to (exterior cells only) int32 - Grid X int32 - Grid Y
-		Form Reference	Reference to the form that was moved
Form Reference
References to objects in cells are listed as part of the cell data, each beginning with FRMR and NAME fields, followed by a list of fields specific to the object type.
+	FRMR	uint32	Reference ID
+	NAME	zstring	Object ID or "PlayerSaveGame"
-	UNAM	uint8	Reference blocked (value is always 0; present if Blocked is set in the reference's record header, otherwise absent)
-	XSCL	float32	Reference's scale, if applicable and not 1.0
-	ANAM	zstring	NPC ID, if applicable (NPC-only)
	BNAM	zstring	Global variable name
-	CNAM	zstring	Faction ID (not light, NPC, or static)
	INDX	uint32	Faction rank
-	XSOL	zstring	ID of soul in gem (soul gems only)
-	XCHG	float32	Enchantment charge (charged items with non-zero charges)
-	INTV	depends on object type	Remaining usage uint32 - health remaining (weapons and armor) uint32 - uses remaining (locks, probes, repair items) float32 - time remaining (lights)
-	NAM9	uint32	Value
*	DODT	struct (24 bytes)	Cell Travel Destination (Rotations are in radians) float32 - Position X float32 - Position Y float32 - Position Z float32 - Rotation X float32 - Rotation Y float32 - Rotation Z
	DNAM	zstring	Cell name for previous DODT, if interior
-	FLTV	uint32	Lock difficulty
-	KNAM	zstring	Key name
-	TNAM	zstring	Trap name
-	ZNAM	uint8	Reference is disabled (always 0). Like UNAM, this will be emitted if the relevant flag is set in the reference's record header. This may only be possible via scripting. Also, even if present in the file, the field appears to be ignored on loading.
-	DATA	struct (24 bytes)	Reference position (Rotations are in radians) float32 - Position X float32 - Position Y float32 - Position Z float32 - Rotation X float32 - Rotation Y float32 - Rotation Z