Example with mandatory variables not filled in

rougail:                      # Rougail
  variable1:                  # A first variable
    - val1
    - val2

Example with all variables modifiable

rougail:                      # Rougail
  variable1:                  # A first variable
    - val1
    - val2
  variable2:                  # A second variable
    - val1
    - val2