API Reference > imodeljs-frontend > SelectionSet > HiliteSet HiliteSet Class A set of hilited elements for an IModelConnection, by element id. Hilited elements are displayed with a customizable hilite effect within a Viewport. The set exposes 3 types of elements in 3 separate collections: geometric elements, subcategories, and geometric models. note Typically, elements are hilited by virtue of their presence in the IModelConnection's SelectionSet. The HiliteSet allows additional elements to be displayed with the hilite effect without adding them to the SelectionSet. If you add elements to the HiliteSet directly, you are also responsible for removing them as appropriate. note Support for subcategories and geometric models in the HiliteSet is currently beta. see IModelConnection.hilited for the HiliteSet associated with an iModel. see Hilite.Settings for customization of the hilite effect. Methods Name Description clear(): void Remove all elements from the hilited set. setHilite(arg: Id64Arg, onOff: boolean): void Toggle the hilited state of one or more elements. Properties Name Type Description elements Accessor ReadOnly Uint32Set The set of hilited elements. iModel IModelConnection isEmpty Accessor ReadOnly boolean Returns true if nothing is hilited. models Readonly Uint32Set The set of hilited GeometricModelStates. Beta subcategories Readonly Uint32Set The set of hilited subcategories. Beta wantSyncWithSelectionSet Accessor boolean Control whether the hilited elements will be synchronized with the contents of the SelectionSet. Defined in core/frontend/src/SelectionSet.ts Line 176 Last Updated: 11 June, 2024