Example with mandatory variables not filled in

---
rougail:                      # Rougail
  val1:                       # A dynamic family
    val1:                     # A dynamic family
      var: example            # A dynamic variable
    val2:                     # A dynamic family
      var: example            # A dynamic variable
  val2:                       # A dynamic family
    val1:                     # A dynamic family
      var: example            # A dynamic variable
    val2:                     # A dynamic family
      var: example            # A dynamic variable

Example with all variables modifiable

---
rougail:                      # Rougail
  var:                        # A identifier variable
    - val1
    - val2
  val1:                       # A dynamic family
    val1:                     # A dynamic family
      var: example            # A dynamic variable
    val2:                     # A dynamic family
      var: example            # A dynamic variable
  val2:                       # A dynamic family
    val1:                     # A dynamic family
      var: example            # A dynamic variable
    val2:                     # A dynamic family
      var: example            # A dynamic variable