| An `allOf` branch that only contains another `allOf` can be flattened into the parent `allOf` | /allOf |
| Set a concise non-empty title at the top level of the schema to explain what the definition is about | |
| Set a non-empty description at the top level of the schema to explain what the definition is about in detail | |
| Set a non-empty examples array at the top level of the schema to illustrate the expected data | |
| Keywords inside `allOf` that do not conflict with the parent schema can be elevated | /allOf/1/properties |
| Wrapping `$ref` in `allOf` was only necessary in JSON Schema Draft 7 and older | /allOf/0/allOf/0/$ref |
| Keywords inside `allOf` that do not conflict with the parent schema can be elevated | /allOf/0/allOf/1/properties |