== Example with mandatory variables not filled in

[,yaml]
----
---
extra:                        # Extra
  dyn_a:                      # dyn_{{ identifier }}
    var: example
----
== Example with all variables modifiable

[,yaml]
----
---
rougail:                      # Rougail
  var:                        # A variable
    - a
extra:                        # Extra
  dyn_a:                      # dyn_{{ identifier }}
    var: example
----