Adobe 12040118 - After Effects Standard Tutorial page 195

box in a speed graph moves the selected keyframes in time only.
When you select multiple keyframes in the Graph Editor, a free-transform bounding box appears.
1. Switch to the Graph Editor view and display the keyframes you want to adjust.
2. Using the Selection tool, do one of the following:
To select keyframes, Shift-click the keyframes or drag to draw a marquee around the keyframes.
To select all keyframes for a property, Alt-click (Windows) or Option-click (Mac OS) a segment between two keyframes.
3. Do any of the following:
To move keyframes in time or value, place the pointer inside the bounding box and drag. Shift-drag to constrain the move horizontally or
vertically.
To move keyframes in time or value by scaling the bounding box, place the pointer on a bounding box handle. When the pointer changes
to a straight, double-sided arrow
(Windows) or Command-drag (Mac OS) to scale around the anchor point of the bounding box. When dragging a corner handle, Alt-drag
(Windows) or Option-drag (Mac OS) to move only that handle.
Scale by negative amounts to reverse the keyframes in time.
To taper keyframe values vertically, Ctrl+Alt-drag (Windows) or Command+Option-drag (Mac OS). Tapering keyframe values allows you
to reduce or expand the amplitude of a repeated animation.
To move one side of the bounding box up or down, Ctrl+Alt+Shift-drag (Windows) or Command+Option+Shift-drag (Mac OS).
To move the anchor point of the bounding box, place the Selection tool over the anchor point until the tool changes to the Move Anchor
Point tool , and then drag.
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, drag the bounding box to a new size. Shift-drag to constrain the ratio of width to height. Ctrl-drag