API Reference > presentation-common > PresentationRules > DEPRECATED_RelatedPropertiesSpecification > autoExpand autoExpand autoExpand: undefined | boolean Should field containing related properties be automatically expanded. This only takes effect when content class is related to properties source class through a one-to-many or many-to-many relationship. Defined in presentation/common/src/rules/content/modifiers/RelatedPropertiesSpecification.ts Line 94 Last Updated: 13 June, 2024