Example with all variables modifiable ---  rougail: # Rougail   calculate: # A calculated variable   - value1   - value2   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