# Example with all variables modifiable

    leader:                       # A leadership
      - leader: value1            # A leader
        follower1: val11          # A follower
        follower2: val21          # An other follower
      - leader: value2            # A leader
        follower1: val11          # A follower
        follower2: val21          # An other follower
    calculate: value2             # A calculated variable