In xfce4-terminal, the Alt key with a letter of one of the menu items is a shortcut for entering that menu item: Alt+F for File, Alt+E for Edit, and Alt+A for Tabs. How do I change this behaviour? I would like to use Alt+a in another application (irssi) and disable this shortcut within xfce4-terminal. I have already looked at Settings -> Window Manager -> Keyboard, but this shortcut is not listed there. How can I change or disable it?