Android Studio: keyboard shortcut to show the error on the current line?

Question

The only way I have found to show the error of an underlined piece of code is to hover it with the mouse.

What is the keyboard shortcut to achieve this? (when the cursor is on the line in error)

Answer 1

On Mac that's Command-F1 (in the menu bar it's View -> Error Description). I think that's Control-F1 on Windows.