Click

To

Return to normal edit mode after zooming or dragging.

Select the drag tool.

Select the zoom tool.

Display a dropdown list to set the zoom scale to a particular value.

Zoom larger by one zoom step.

Zoom smaller by one zoom.

Set the zoom scale to 100%.

Zoom to fit the entire image on the screen.

Zoom to fit the image height on the screen.

Zoom to fit the image width on the screen.