Apple Motion 3 - Manual (Page 223)

Chapter 2 Creating and Managing Projects 223
Deleting Objects from a Project
There are two ways you can delete an object in Motion. You can delete a single
instance of an object from the composition by deleting it in the Layers tab, Timeline, or
Canvas. By default, this removes the object from use and removes its source media in
the Media tab, if it is no longer used by the project. If other instances of that object
appear in your project, those are left alone.
You can also delete the object that appears in the Media tab. Doing this also removes
all corresponding instances of that object in your project.
To delete one or more objects from a project:
1 Select one or more objects by doing one of the following:
 To delete a single object, select it in the Layers tab, the Timeline, or the Canvas.
 To delete multiple objects, Shift-click the objects.
Note: In the Layers tab or Timeline, you can Command-click to select noncontiguous
objects.
2 To delete the selected objects, do one of the following:
 Choose Edit > Delete.
 Press Delete.
The objects are deleted from your project, but their corresponding source media files
on disk remain untouched.
To delete all objects that correspond to a single object in the Media tab:
1 Open the Media tab, then select the source media you want to delete.
2 Do one of the following:
 Choose Edit > Delete.
 Press the Delete key.
A dialog appears and prompts you to confirm the deletion.
3 Click Delete.
Exchanging Media in a Project
You can exchange any layer in your project with a different object in the File Browser or
Library. This breaks that layer’s original source file link and creates a new link to the file
you’re exchanging. When you exchange a layer’s source media, the object in your
project retains all of its Property tab parameter values (including the Position, Scale,
and Opacity parameters), selected blend mode, nested filters and behaviors, masks,
and keyframes.