This page uses the same library as the full Dockyard sample, without its shell.
Drag this title or a document tab. Use the pin to auto-hide this group.
The editor remains a real textarea.
The layout above is declared with HTML custom elements. Access the instance through document.querySelector('avalon-dock').manager.
See the README, API guide, compatibility table and tests in the source package.
This is a browser API adaptation, not a WPF runtime or complete native API parity.