Example with mandatory variables not filled in

---
rougail:                      # Rougail
  variable: example           # A variable
  family:                     # A family
    variable1: example        # A first variable
    subfamily:                # A sub family
      variable: example       # A variable
    variable2: example        # A second variable

Example with all variables modifiable

---
rougail:                      # Rougail
  variable: example           # A variable
  family:                     # A family
    variable1: example        # A first variable
    subfamily:                # A sub family
      variable: example       # A variable
    variable2: example        # A second variable