---
tabs:
  - direction: Horizontal
    parts:
      - direction: Vertical
        parts:
          - direction: Horizontal
            split_size:
              Percent: 20
          - direction: Horizontal
            split_size:
              Percent: 50
            tabs:
              - direction: Horizontal
        split_size:
          Percent: 80
      - direction: Vertical
        split_size:
          Percent: 20