These commands replicate those found on the Navigation toolbar in Track View.
Pan—Lets you move the window. See Pan (Track View).
Zoom—Lets you zoom in and out. See Zoom Track View Key Window.
Zoom Region—Lets you zoom in to a rectangular area. See Zoom Region (Track View).
Zoom Horizontal Extents—Zooms to the active time segment. See Zoom Horizontal Extents.
Zoom Horizontal Extents Keys—Zooms to show all keys. See Zoom Horizontal Extents.
Zoom Value Extents—(Curve Editor only) Zooms vertically so that you can see the full height of the curve.
Zoom Values—(Curve Editor only) Zooms the contents of the keys window vertically. Drag upward to increase magnification, or downward to decrease magnification.