Apple Motion 4 - Manual (Page 1131)

Locking Layers and Shapes While Editing Illustrations
You can lock layers and shapes that are behind the shapes you’re drawing and editing
in the foreground to avoid accidentally selecting and modifying the wrong one. Layers
and shapes can be locked and unlocked at any time. To lock a layer or shape, use the lock
icons in the Layers tab or Timeline layers list.
Using Object Alignment
While arranging groups of shapes to create more complex illustrations, you can use the
Alignment commands in the Object menu. For more information on using object
alignment, see
Using Object Alignment Commands .
Creating Holes and Transparency in Shapes
There are several ways you can create holes and transparency within shapes. You can use
the Opacity, Blend Mode, and Preserve Opacity parameters in the Properties tab to modify
a shape’s overall transparency.
Shapes with multiple blend modes
For more information on using object blending parameters, see Blend Modes .
1131 Chapter 17 Using Shapes, Masks, and Paint Strokes