Example with mandatory variables not filled in

---                                                                             
rougail:                      # Rougail                                         
  custom1:                    # A first custom variable                         
    - example                                                                   

Example with all variables modifiable

---                                                                             
rougail:                      # Rougail                                         
  custom1:                    # A first custom variable                         
    - example                                                                   
  custom2:                    # A second custom variable                        
    - value