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A property provides the validation for a member within the instance object.

Each property in the container must have a unique name, and this name is used to match it against the member in the instance object.

Matching instance objects are validated using the properties schema.

If the property is drawn with a dotted line (as above) then it is optional in the instance object. If it is drawn with a solid line then it is required, and a member with the corresponding name must exist in the instance object.

 

Properties can be added to the parent schema or containing Properties container using the right click context menu.

 

For more in depth information regarding see the keywords properties, patternProperties, additionalProperties and propertyNames.