$1)$ in the lectures and in the exercises, numerical material flow simulations have been shown and done by students.

The WIP level was varied in a series of simulations to determine its effect on an important production parameter.

Which parameter is it$?$

Please draw the chart that was created from the simulation results $($WIP level on the x$-$axis$).$

$2)$ What does WIP mean?

In how far is it an important production parameteI?