Show Vertex Normals
When you use the Show Vertex Normals command, Modo displays small lines that represent the vertex normal facing directions for each vertex in a Vertex Normal Map. Split lines represent creased hard edges, and single lines represent smoothed edges. You must have a Vertex Map present to see anything after using this command.
Once your map is created, you can display the normals at each vertex by clicking View > Show Vertex Normals.