DM Object: box 1 MPI process
  type: plex
box in 1 dimension:
  Cells are at height 1
  Number of 0-cells per rank: 3
  Number of 1-cells per rank: 2
  Number of 2-cells per rank: 4 [4]
Labels:
  celltype: 3 strata with value/size (0 (3), 1 (2), 12 (4))
  depth: 3 strata with value/size (0 (3), 1 (2), 2 (4))
  marker: 1 strata with value/size (1 (2))
  Face Sets: 0 strata with value/size ()
  middle: 1 strata with value/size (1 (5))
