Skyrim Mod:Mod File Format/NVMI Field

NVMI fields contain navmesh data.

Name	Type/Size	Info
Navmesh	formid
Unknown	uint32	Possibly a flag for a data type: 0x00000020 if is island, 0x00000000 if not island but has been modified, 0x00000040 if not island and not modified.
X:	float32	X center point of the navmesh.
Y:	float32	Y center point of the navmesh.
Z:	float32	Z center point of the navmesh.
Preferred Merges Flag	uint32
Merged to Count	uint32
Merged to	formid[num]
Preferred Merges Count	uint32
Preferred Merges	formid[num]
Linked Doors	struct Door[num]	Count of door REFR data.
Doors	struct Door	Unknown uint32 and Door REFR formid.
Is Island Flag	uint8	Is island mesh flag. If it is an island, then a data structure follows.
Beginning of data that only appears if the Is Island Flag = TRUE.
X:	float32	This is the minimum X,Y and Z coordinate of the navmesh.
Y:	float32
Z:	float32
X:	float32	This is the maximum X,Y and Z coordinate of the navmesh. This together with the Minimum X,Y and Z coordinate appear to represent a bounding box.
Y:	float32
Z:	float32
Triangle count	struct Triangle[num]	This is a count of triangles that make an estimated or summary navmesh.
Vertex index 0	uint16	struct Triangle: This is a structure made up of 3 vertex indexes. These indexes create a navmesh triangle by pointing into the vertex structure that follows this structure.
Vertex index 1	uint16
Vertex index 2	uint16
Vertex count	struct Vertex[num]	This is a count of Vertices in the array that follows.
X:	float32	struct Vertex: This is a structure of X,Y and Z coordinates that make a vertex. This is the vertex that is referred to by the struct Triangle above.
Y:	float32
Z:	float32
End of data that only appears if the Is Island Flag = TRUE.
Location Marker?	uint32	Appears before location info.
World Space	formid	formid of the world space. If World Space = 0x0000003C then the following uint32 contains grid info, otherwise it contains a cell formid.
Cell/Grid	formid or sint16 & sint16	formid of the cell unless World Space = 0x0000003C then it is a pair of signed integers that represent grid x and grid y.