Some commands use Emacs' minibuffer to prompt for input.
I occasionally do something which moves the focus to another window and away from the minibuffer. In these cases I cycle windows with
C-x o until I regain focus on the echo area or point and click with the mouse.
What's the Emacs command to immediately focus the minibuffer or prompt?
Writing the Elisp to automate this action should be trivial but I'd rather use a built-in command or function if one's available.