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Table Of Contents
Chapter 1 Getting to Know Motion 99
 Delete Keyframe: Deletes the current keyframe. The Delete Keyframe command is
only available if the playhead is positioned on a frame where a keyframe already
exists.
Note: You can also Control-click a keyframe and choose Delete from the shortcut
menu, or select the keyframe and press Delete to delete a keyframe.
 Previous Keyframe: Moves the playhead to the previous keyframe for this
parameter. The Previous Keyframe command is only available if a keyframe exists
earlier in the project.
Note: You can also press Option-K to advance to the next keyframe.
 Next Keyframe: Moves the playhead to the next keyframe for this parameter. The
Next Keyframe command is only available if a keyframe exists later in the project.
Note: You can also press Shift-K to advance to the next keyframe.
 Interpolation: Sets the type of curve for the parameter. See the table in “Modifying
Curves on page 545 for examples of the different interpolation methods.
 Before First Keyframe: Defines the animation before the first keyframe of a
parameter. This is called extrapolation.
 After Last Keyframe: Defines the animation after the last keyframe of a parameter.
This is called extrapolation.
Note: For examples of the different extrapolation methods, see “Extrapolation on
page 550.
 Lock/Unlock Parameter: Locks the parameter to prevent changes. When a
parameter is locked, neither keyframes nor curves are adjustable.
 Reduce Keyframes: Applies a “thinning” algorithm to the keyframes for the selected
parameter. This reduces the number of keyframes in a parameter while attempting to
maintain a similar curve shape. For more information on keyframe thinning, see
Keyframe Thinning on page 559.
 Set to Curve Snapshot: If Take/Show curve snapshot is turned on, this option
reverts any keyframe changes made in the currently selected curve back to the most
recent snapshot. For more information, see “Curve Snapshots on page 538.