Assets panel (HTML)
The Assets panel lists all of the HTML elements, controls, and media that you can add to the artboard. In addition, the most recently used controls appear in the Tools panel.
You can open the Assets panel by clicking Assets at the bottom of the Tools panel, or by clicking Assets on the Window menu.
The Assets panel when you are working on a Windows Store app built using HTML
Search box Use the Search box to filter the list of assets.
Grid mode and List mode Switch between the Grid mode view and the List mode view of assets.
Assets categories Click a category or subcategory to view the list of assets in that category.