Apple Motion 4 - Manual (Page 273)

To show or hide one or more selected layers
Do one of the following:
µ
Click the checkbox to the left of a single object or group in the Layers tab or Timeline.
Activation checkbox
µ
Choose Object > Active (or press Control-T) to turn the layers on or off.
µ
Control-click a layer or group, then choose Active from the shortcut menu.
Note: If you hide one or more layers within a group, the enclosing group’s Activation
checkbox shows a dash, instead of a checkmark, to show that some of its layers are not
visible.
You can “solo” a layer or group in order to hide all other layers in the project. This
technique can be useful when you want to isolate a single object in the Canvas to animate
or manipulate without interfering with other objects in your composition.
To solo a layer
µ
Select one or more layers or groups to solo.
µ
Choose Object > Solo (or press Control-S).
Note: You can also Control-click an object in the Layers tab, then choose Solo from the
shortcut menu.
All other layers or groups are deactivated, and only the soloed object is visible in the
Canvas. When the selected item is soloed, the solo menu item displays a checkmark.
Fixing the Size of a Group
By default, the size of a group is determined by the layers within that group. Because
animated objects often grow in size, the active height and width of a group (its resolution)
can become quite large. You can constrain the resolution of a group to a specific width
and height in the Group tab of the Inspector.
273 Chapter 6 Creating and Managing Projects