Example with all variables modifiable

---
rougail:                      # Rougail
  var:                        # A suffix variable
    - val1
    - val2
    - val3
    - val4
  val1_dyn:                   # A dynamic family
    var1: val1                # A variable 1
    var2: val1                # A variable 2
    var3: val1                # A variable 3
    var4: val4                # A variable 4
  val2_dyn:                   # A dynamic family
    var1: val2                # A variable 1
    var2: val2                # A variable 2
    var3: val2                # A variable 3
    var4: val4                # A variable 4
  val3_dyn:                   # A dynamic family
    var1: val3                # A variable 1
    var2: val3                # A variable 2
    var3: val3                # A variable 3
    var4: val4                # A variable 4
  val4_dyn:                   # A dynamic family
    var1: val4                # A variable 1
    var2: val4                # A variable 2
    var3: val4                # A variable 3
    var4: val4                # A variable 4