Menu Manage > Annotations: Can someone explain "Annotations" and "Annotations Layers"? Docs. are explaining nothing: https://superset.incubator.apache.org/search.html?q=annotation&check_keywords=yes&area=default
CSS in Dashboard-Config.?: When editing a Dashboard (Dashboard > "Edit Dashboard") there's a text field "CSS": What can I enter here e.g. given Dashboard "World's Bank Data"? Is this documented anywhere?
