Mesh format_ ModelName.post.msh_Mesh example

This example clarifies the description:
#mesh of a table
MESH "board" dimension 3 ElemType Triangle Nnode 3

1. color 127 127 0
   Coordinates
2. node number coordinate_x coordinate_y coordinate_z
   1 -5 3 -3
   2 -5 3 0
   3 -5 0 0
   4 -2 2 0
   5 -1.66667 3 0
   6 -5 -3 -3
   7 -2 -2 0
   8 0 0 0
   9 -5 -3 0
   10 1.66667 3 0
   11 -1.66667 -3 0
   12 2 2 0
   13 2 -2 0
   14 1.66667 -3 0
   15 5 3 -3
   16 5 3 0
   17 5 0 0
   18 5 -3 -3
   19 5 -3 0
   end coordinates
   #we put both material in the same MESH,
   #but they could be separated into two MESH
   Elements
3. element node_1 node_2 node_3 material_number
   5 19 17 13 3
   6 3 9 7 3
   7 2 3 4 3
   8 17 16 12 3
   9 12 16 10 3
   10 12 10 4 3
   11 7 9 11 3
   12 7 11 13 3
   13 2 4 5 3
   14 5 4 10 3
   15 19 13 14 3
   16 14 13 11 3
   17 3 7 4 3
   18 17 12 13 3
   19 13 12 8 4
   20 13 8 7 4
   21 7 8 4 4
   22 4 8 12 4
   end elements
   MESH dimension 3 ElemType Line Nnode 2
   Coordinates
   #no coordinates then they are already in the first MESH
   end coordinates
   Elements
4. element node_1 node_2 material_number
   1 9 6 5
   2 19 18 5
   3 16 15 5
   4 2 1 5
   end elements