---
- name: Spec Example 5.3. Block Structure Indicators
  from: http://www.yaml.org/spec/1.2/spec.html#id2772312
  tags: explicit-key spec mapping sequence
  yaml: |
    sequence:
    - one
    - two
    mapping:
      ? sky
      : blue
      sea : green
  tree: |
    +STR
     +DOC
      +MAP
       =VAL :sequence
       +SEQ
        =VAL :one
        =VAL :two
       -SEQ
       =VAL :mapping
       +MAP
        =VAL :sky
        =VAL :blue
        =VAL :sea
        =VAL :green
       -MAP
      -MAP
     -DOC
    -STR
  json: |
    {
      "sequence": [
        "one",
        "two"
      ],
      "mapping": {
        "sky": "blue",
        "sea": "green"
      }
    }
  dump: |
    sequence:
    - one
    - two
    mapping:
      sky: blue
      sea: green