How do you disable/hide this hotkey towards the bottom right of my screen with the marine's face on it? It's set as f3 for me in-game and selects my marine unit. Hotkey is circled in red in the attached image.
In reply to alan_rogers:
That unit was actually a Hero type (Raynor) so it was a hotkey to select Hero: I changed the type to the proper Unit type of Marine.