Apple Motion 3 - Manual (Page 247)

Chapter 2 Creating and Managing Projects 247
m Select one or more layers or groups, then choose Object > Lock (or press Control-L).
The locked layer’s bounding box in the Canvas turns red to indicate that it is locked.
Collapsing and Uncollapsing Group Hierarchies
Groups and layers in the Layers tab appear in a hierarchy that shows which layers are
nested inside which groups. Nested layers and groups appear underneath and
indented to the right of the group they’re nested within.
To make the Layers list easier to manage, you can collapse all layers that appear nested
within a single group using that group’s disclosure triangle. Collapsed groups appear as
a single line in the list, and can be moved or nested like any other layer. Each group’s
thumbnail displays a preview of the entire composite within, making it easy to see
what’s nested inside.
To open or collapse a single group, do one of the following:
m Click the disclosure triangle to the left of that group’s name and icon.
m Press the Up and Down Arrow keys to navigate up and down the Layers list, then press
the Right Arrow key to open a group, or the Left Arrow key to collapse it.
Renaming Groups
You can rename the groups and layers that appear in the Layers tab to further organize
your media and make each group’s and object’s purpose easier to identify. When you
rename a layer, the original name of the source media file on disk remains unchanged.
Also, changing a layer’s name in the Layers tab does not change the name of its
corresponding object in the Media tab. You cannot change the name of an object in
the Media tab.
To rename a group or layer:
1 Double-click the name of the group or layer you want to rename.
2 When the name is highlighted, type a new name.