---
- name: Spec Example 9.6. Stream [1.3]
  from: 6ZKB, modified for YAML 1.3
  tags: spec header 1.3-mod
  yaml: |
    Mapping: Document
    ---
    # Empty
    ...
    %YAML 1.2
    ---
    matches %: 20
  tree: |
    +STR
     +DOC
      +MAP
       =VAL :Mapping
       =VAL :Document
      -MAP
     -DOC
     +DOC ---
      =VAL :
     -DOC ...
     +DOC ---
      +MAP
       =VAL :matches %
       =VAL :20
      -MAP
     -DOC
    -STR
  json: |
    {
      "Mapping": "Document"
    }
    null
    {
      "matches %": 20
    }
  emit: |
    Mapping: Document
    ---
    ...
    %YAML 1.2
    ---
    matches %: 20