Programming Depth: Interactive Movement - Flash 3D: Animation, Interactivity, and Games - page 97

Select the middleground instance. Go to the Properties panel and enter midwater_mc
in the instance name box (Figure 4.9).
Figure 4.9 Instance name for the middle ground movie clip
Select the foreground instance. Go to the Properties panel and enter forewater_mc
in the instance name box (Figure 4.10).
Figure 4.10 Instance name for the foreground movie clip
Step 11: Create a new layer
Add a new layer above the foreground layer and label it actions (Figure 4.11). Open
the Actions panel. If the Actions panel is not open, you can access it by choosing
Window > Actions.
Figure 4.11 Creating a new layer and labeling it actions