Select text field that is not focused without losing selection Lets assume I selected text in a text field and focused another (in the same application, e.g. Xcode's assistant editor), so the first one is no longer the first responder. The selection will appear gray.

Is there a way to return focus to the first text field without losing the selection?
Either use Cmd/Tab to cycle round to the app, or simpler, click the window's title bar...