The wackier dynamic ones are a grab bag: question marks, ampersands, equal signs, exclamation points, asterisks and other keyboard symbols snake their way into these navigation bars.
The first three terms, on either side of the equal sign are respectively the pressure, the kinetic energy density of the fluid and the potential energy density due to gravity.
That the once universal sign of wealth, ordering a big steak, can be replaced by an equal sign of ostentation, a $17 carrot, means the needle is moving.