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Select menu
These options control which components of an animation curve are available for selection and editing.
NoteWhen you select components of an animation curve in the graph view of the Graph Editor, a box appears in the Outliner corresponding to the attribute whose components are currently selected.
All
Enables selection of any of the components of an animation curve.
Only Curve
Constrains your selection to only animation curve segments.
Curve
Constrains your selection to animation curve segments.
Key
Constrains your selection to keys.
In Tangent
Constrains your selection to the in tangents of a key. In tangents are the tangents that describe the shape of the curve segment entering a key.
Out Tangent
Constrains your selection to the out tangents of a key. Out tangents are the tangents that describe the shape of the curve segment leaving a key.
NoteTo select a tangent when the Key and Curve selections are disabled, you must select View > Tangents > Always.