| Value | Meaning |
|---|---|
| Invalid0 | Invalid (uninitialized) event. |
| StreamStart | Stream start |
| StreamEnd | Stream end |
| DocumentStart | Document start |
| DocumentEnd | Document end |
| Alias | Alias |
| Scalar | Scalar |
| SequenceStart | Sequence start |
| SequenceEnd | Sequence end |
| MappingStart | Mapping start |
| MappingEnd | Mapping end |
Event types.