Dashboard tooltips

Is there a way to add hover-over tooltips to text on the dashboard? I'd like to do this to give other users a hand while they're using my project.

I think we only added them to nodes that you can use as inputs, as the text output widget already has a label that should indicate what it does.

Related to this topic, it will be great to display tooltip on icons when dashboard is configured with Always show icons only. The tooltip should be the name of dashboard tab node.