Sims 3:0x02019972

Sims 3:Main Page -> Sims 3:PackedFileTypes
Sims 3:Main Page -> Sims 3:RCOL

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MTST

This is a Sims_3:RCOL chunk.

   DWORD // 'MTST'
   DWORD // version?
   DWORD // unknown
   DWORD // (initial MATD index) | 0x10000000;
   DWORD // count

 repeat count:
   DWORD // (MATD index) | 0x10000000
   DWORD // material's hash name

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Postulate based MTST blocks encountered so far (Needs Confirmation!):

All MTST blocks have a count >= 1 and the following block:

   DWORD // (MATD index = initial MATD index) | 0x10000000
   DWORD // 0x2EA8FB98 (fnv32 hash of "Default")

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Sims 3:Main Page -> Sims 3:PackedFileTypes
Sims 3:Main Page -> Sims 3:RCOL