There may be a delay of around 30 seconds between your request for a change and the change occurring. Click to toggle the on-screen instructions on and off. Pan Click to scroll the view in the specified direction. When the icon is grey the edge of the data has been reached. No further scrolling in this direction is possible.
Zoom Provides a menu with a variety of zoom choices.
The left mouse button is used to reposition and resize the elastic box that appears when you choose this mode. When the four-point arrow cursor is active, holding the left mouse button and dragging repositions the Zoom Box. The two-headed arrow shapes indicate side or corner resizing is active when you click and drag. When you are satisfied with the size and position of the box, click the right mouse button. Once you have made your choices hit the submit button to have the software display your new choices.