With this options you can set the element type which will be generated with control_mesh_macro (with the same index). This option is only available in 2d and 3d.
For element you can use -tria3, -tria6, -quad4 and -quad9 in 2d. For element you can use -tet4, -tet10, -hex8 and -hex27 in 2d.
If this record is not specified then -bar2 (1d), -quad4 (2d) or -hex8 (3d) will be generated.