Example with all variables modifiable

rougail:                      # Rougail
  leader:                     # A leadership
    - leader: val1            # A leader
      follower1: example      # A first follower
      follower2: example      # A second follower
    - leader: val2            # A leader
      follower1: example      # A first follower
      follower2: example      # A second follower