Apple Motion 4 - Manual (Page 159)

Animation menu: Most parameters can be animated. This means that you can assign
specific values to certain frames (keyframes) so the parameter value changes over time.
Any parameter that can be animated has an Animation menu to the right of the parameter
settings.
Animation menu
Depending on the current condition of the parameter, the Animation menu displays a
different icon. For a table indicating the possible states, see
Animation Menu States .
Click the Animation menu to display a pop-up menu filled with animation options:
• Enable/Disable Animation: Remains unavailable until keyframing is applied to the
parameter, either by using the Record button or by adding a keyframe. Once the
parameter is animated, the menu item is automatically renamed Disable Animation.
Activating it at that point effectively hides the keyframes you have set, restoring the
parameter to its default value. However, the keyframes are not thrown away. Choosing
Enable Animation restores the channel to its last keyframed state.
• Reset Parameter: Removes all keyframes and settings for this parameter. The parameter
value is reset to its default value.
• Add Keyframe: Adds a keyframe at the current frame. If the playhead is positioned on
a frame where a keyframe has already been added, this menu item is unavailable. You
can also Option-click the animation menu to add a keyframe.
Note: You can use a keyboard shortcut to quickly add a keyframe by pressing Control-K.
A keyframe is automatically added to the last modified parameter of the layer.
• 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.
• 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.
159 Chapter 3 User Interface Controls