This interactive example demonstrates a drag-and-drop workload modeller built with custom HTML elements. It shows how items (including nested SVG graphics) can be moved between containers, reordered within collections, and grouped into targets using vc-dragitem and vc-dragcontainer elements. The implementation relies on the native HTML5 Drag and Drop API, custom elements defined via customElements.define, and CSS grid for layout. Users can select multiple items, collapse/delete collections, and save or restore connection configurations.