I found the first example clear: the response (which sub-menu is showing) depends on the way the current situation was reached (whether another sub-menu was sho

I found the first example clear: the response (which sub-menu is showing) depends on the way the current situation was reached (whether another sub-menu was showing above when you moved the mouse down and over this sub-menu). Wikipedia defines two terms taking the possible lag into account: "Hysteresis can be a dynamic lag between an input and an output that disappears if the input is varied more slowly; this is known as rate-dependent hysteresis. However, phenomena such as the magnetic hysteresis loops are mainly rate-independent, which makes a durable memory possible." https://en.wikipedia.org/wiki/Hysteresis https://en.wikipedia.org/wiki/Hysteresis