Example with mandatory variables not filled in


---                                                                             
var1: example                 # First variable                                  
family:                       # A family                                        
  var2: string6               # A second variable                               



Example with all variables modifiable


---                                                                             
var1: example                 # First variable                                  
family:                       # A family                                        
  var2: string6               # A second variable                               
  subfamily:                  # A sub family                                    
    variable:                 # Third variable                                  
      -                                                                         
      -                                                                         
family2:                      # A family                                        
  var2: example               # A variable2                                     
  var3: string5                                                                 
  subfamily:                  # A sub family                                    
    variable:                 # Fourth variable                                 
      -                                                                         
      -                                                                         
      - string4