---
- name: Spec Example 6.13. Reserved Directives [1.3]
  from: 6LVF, modified for YAML 1.3
  tags: spec directive header double 1.3-mod
  yaml: |
    %FOO  bar baz # Should be ignored
                  # with a warning.
    ---
    "foo"
  tree: |
    +STR
     +DOC ---
      =VAL "foo
     -DOC
    -STR
  json: |
    "foo"
  dump: |
    ---
    "foo"
  emit: |
    --- "foo"