Interval

In patterns of looped, reappearing movements, where seemingly boring reiteration guides the process, there resides the virtual. It comes in as an underdog, subdued by directional recession, informally passive and draggy, yet in a form of a charged advancement on a performed loop. An interval.
The dynamics of an interval consume our interest.

A basic loop ( any circular dangling movement ) makes us observe and study the simplest unit of an interactive relation. Starting with felt engagement, ease of coordination, directional interdependence or desirability for realization, there are many dynamic qualities that might complete the list of required components, many of them seem to escape a name.

All that any interval-based movement needs is an en(-)trance, then it simply takes over. :)