Graph Editor Select menu

These options control which components of an animation curve are available for selection and editing.

Note When 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.

Note To select a tangent when the Key and Curve selections are disabled, you must select View > Tangents > Always.
Pre-Select Highlight: Turns on pre-selection highlighting for curves, segments, tangents, and keys in the graph view, giving you visual feedback on what you are about to select. See also Turn on Pre-selection highlighting in the Graph Editor.