Learning > faq Edit this page Frequently Asked Questions This document provides answers to some of the frequently asked questions about iTwin.js. If you have a question that is not covered here, you might find an answer on one of the iTwin.js Community Resources. How are labels calculated in presentation-driven components like tree and property grid? Presentation-driven components apply default BIS rules when creating content for these components. The rules include some label overrides whose behavior is described in detail here. Last Updated: 12 June, 2024