'-', ',', '[]', '{}'] Scalar: ['''', '"', '|', '>'] # Folded >, Literal | Document: ['%', '---', '...'] Misc: ['#'] - Anchor (node label): '&' - Alias (ref to anchored node): '*' - Keys: '<<' - Types (Repository): Core: ['!!map', '!!seq', '!!str'] More: ['!!omap', '!!set'] - Stream, Document, Node, Block scoping, Flow (Curly/Square) scoping, Literal, Dump, Load, Canonical - Language Independent: Null: ['~', 'null'] Decimal: 1234 Hexadecial: 0x4D2 Octal: 02333 sexagesimal: 190:20:30 Fixed Float: 1_230.15 Exponential Float: 12.3015e+02 Time: Infinity: ['.inf', '-.Inf'] Not a Number: Nan Boolean: ['Y', 'true', 'Yes', 'ON', 'n', 'FALSE', 'No', 'off'] Base64 Binary: '? !!binary R0lG...BADS=' - Tag (Directive): Explicit: '!': Primary tag handle (primary namespace) '!!': Secondary tag handle Application-specific: local. e.g. language-specific, '!ruby/object:Set' Global: