
which will hide a part that you don’t want included in the simulation. There
is another light bulb icon in the menu bar at the top of the page; if you have
any hidden parts, you can click on this Show all light bulb icon to make them
visible again.
The Simulation Timeline
The timeline turns red after you click Play. In this model, a ball rolls down
a wedge block and hits the dominoes (Figure
5-5
). Pause the animation by
clicking Pause.
Drag the timeline’s circle left or right to review parts of the simulation
recording (Figure
5-6
). You can’t drag the circle past where you stopped
playing. When you click Play again, the timeline will continue advancing ...