CNC, robotic, and industrial equipment too: Human-machine interfaces have rows o...

CNC, robotic, and industrial equipment too: Human-machine interfaces have rows of "Soft keys", buttons whose function changes depending on the context. Many machines used soft keys in the ages before touchscreens were available, but manufacturing is slow to change and even with the advent of multi-touch high-resolution color displays, they've remained. For examples:

(OK, maybe the AB went a little overboard on the number of function keys...) but these are really effective tools to structure menus and build HMIs.