# rules Contains the elements used in data binding and media queries. ## Overview The `rules` element contains a set of `specialize` elements that are used to modify existing elements. The `specialize` elements use data queries to determine how the existing element is modified. Here’s an example that sets the rules for a `button` element. ```xml Resume Play ``` ### Subelements of rules - [specialize](/documentation/TVML/specialize) ### Elements that Use rules The `rules` element can used by any other element. ## Topics ### Valid TVML Attributes [binding](/documentation/TVML/binding) Associates information in a data item with an element. [prototype](/documentation/TVML/prototype) Associates a data item type with an element. [theme](/documentation/TVML/theme) Sets the color scheme for an element. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)