Zoom Tool
The Zoom Tool allows you to zoom in or out on a specific point with a single click on the map or zoom in on an area clicking and dragging over an area. Selecting the Zoom Tool makes this the active tool. When the Zoom Tool is active the cursor will change to a magnifying glass icon on the map and the toolbar button will remain highlighted.
Enable the Zoom Tool from the Tools Menu, with the Zoom button from the Navigation Toolbar, or with the Alt+Z keyboard shortcut.
To zoom in, left click without dragging the mouse. The view will center on where the mouse was clicked and will zoom in by a factor of two. To zoom out, right click without dragging the mouse. The view will zoom out by a factor of two, centered on where the mouse was clicked. You can also hold down the Ctrl key while right clicking to restore the view to the last zoomed view.
Zoom in on a rectangular area left clicking and dragging a box while holding down the left mouse button. The area of data within the drawn box will be used as the data view extent.