If an object is animated by simple keyframe animation, for each attribute of the object you select, there will be one animation curve driving that attribute. In this case, each of the animated attributes (channels) of that object will be listed indented below the object.
You can split the Graph Editor’s outliner so you can look at two different listings at the same time. This makes it a lot easier for you to go back and forth between working on different sets of animation curves.
To split the outliner, move the cursor towards the bottom of the outliner. You will notice that the cursor icon changes into an “up-down” icon. You can now drag the cursor to move the outliner separator, which creates a second outliner space.
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