Dear development team,

Now I'm doing a project about visualization. In the process of visualization, the surface mesh is preferred. I have two questions about the DMPlex mesh. 

1. Can I output the 3D volume mesh in DMPlex as a .obj or .fbx file? Both these two meshes are just surface mesh.
2. If not, can I output part of the mesh out? Since I have some labels for this part of mesh, can I output this part of mesh (boundary surface mesh) separately?