Mesh file format
From Legacy Roblox Wiki
Version 1
version 1.00 Number of triangles[Coordinate of first vertex ] [Normal vector at first vertex ] [texture location at first vertex , 0] [Coordinate of second vertex] [Normal vector at second vertex] [texture location at second vertex, 0] [Coordinate of third vertex ] [Normal vector at third vertex ] [texture location at third vertex , 0]