MAPINFO

Nodes

Signature	Description
ATTR	empty
SNDP	Sound program
LGHT	Scene light
ECAM	Event camera
COLS	Collisions (SM1)
FLDD	Collision field (SM2)
DOOR	Doors
SCEX	Cutscenes
SCN3	Scene script v3
SCN4	Scene script v4
REGD	empty
WTHR	Weather
EVFD	empty
LSCN	empty
MAPR	unknown
MAPT	unknown
SCRL	unknown
CHRD	Character data (External models)
END	EOF

Memory Models

Could be the MAPINFO memory model:

Position	Length	Type	Description
0x00	0x04	string	Identifier (SCNC)
0x04	0x0?	?	Variable size (contains pointers)
0x0?	0x04	string	Identifier (USE ) //space at the end
0x0?	0x0?	?	Variable size (contains pointers)

Found at qword_7FF717119290 (v1.03) in the code segment (CS). It is accessed when reading the TRCK segment.

   struct s1 {
       signed char[8] pad8;
       signed char f8; //bool set to 1 at end
       signed char[7] pad16;
       struct s0* f16;
       struct s2* f24; //ASEQ
       struct s2* f32; //ACAM
       struct s2* f40; //AMOV
       struct s2* f48; //ASTR
       struct s2* f56; //ALIP
       uint64_t f64;
       uint64_t f72;
       signed char[8] pad88;
       int32_t f88;
       int32_t f92;
       int32_t f96;
       int32_t f100;
       signed char[12] pad116;
       struct s2* f116;
       signed char[4] pad128;
       struct s2* f128;
       signed char[42376] pad42512;
       int32_t f42512;
       int16_t f42516;
   };

   struct s0 {
       signed char[4] pad4;
       int32_t f4;
       int32_t f8;
   };

   struct s2 {
       int32_t f0;
       int32_t f4;
       signed char[1] pad9;
       signed char f9;
       signed char[2] pad12;
       int32_t f12;
   };