preview.yaml

%YAML 1.2
%TAG !e! tag:example.com,2000:app/ # comment
%RESERVED name parameter #comment
---
- [~, null, Null, NULL, nUll,
   yes, no, true, false,
   0b0, +0b1_0_1, -0b1, ~, 0b, 0b2,
   01, +0_761, -07, ~, 09,
   0, +1, -12_345,
   0x0, +0x12_34_56, -0xabcdef, ~, 0xyz, 0x,
   1:20, +1:9, -1_234:59:00, ~, 1:60, :60,
   0.1, +.293, -1_123.e-3, 2.234.567,
   .inf, +.INF, -.Inf, .nan, ~, .inF,
   .NaN, ~, .Nan,
   2015-08-15, 2015-08-15 1:20:30.123, 2015-08-15T12:20:30.123-9:00,
   plain scalar, 'single-quoted ('''') scalar', "double-quoted (\"\") scalar"
  ]

- &anchor !!omap
  - 1: a
  - 2: b
  - foo: bar

- !!pairs
  - 0: {<<: *anchor, 2: c}
  - 1: a2 [also part of the plain scalar]
  - 2: :another scalar {}
  - !e!float 3: !<tag:example.com,2000:app/int> 1 - 3

- {? !!int '12' : value,
   ? !!str foo : :bar}

- - key: {more key: baz}
    asdf: ~

    ? |-
      block scalar as key
    # comment here
    : !!str >5
      block scalar as value
...