The Trash
The Trash is available for wireframes, assets, and Symbols you have deleted. This allows to keep your project tidy as you make progress and browse or recover earlier concepts when needed.
Note: The Trash icon only shows up if there are items in the Trash.
To recover a trashed item, click on the Trash icon in the Toolbar, select the desired item and click "Restore". The other options allow to delete the selected item permanently or empty the entire Trash.