Take a look at a P-51 Mustang cockpit: https://s-media-cache-ak0.pinimg.com/originals/25/99/be/2599bebe575437689ef4a616a6f7cfce.jpg https://s-media-cache-ak0.p

Take a look at a P-51 Mustang cockpit: https://s-media-cache-ak0.pinimg.com/originals/25/99/be/2599bebe575437689ef4a616a6f7cfce.jpg https://s-media-cache-ak0.pinimg.com/originals/25/99/be/2599... The picture is a bit fuzzy, but the switches and knobs are clearly labeled with english words. Including words like "on" and "off". It's deadly to confuse pilots with what the latest trendy icon for "aileron trim" is.