Pan and Zoom
You can pan a view to reposition it in the drawing area or zoom it to change its magnification.
Using the Realtime option of the PAN function, you move your pointing device to pan dynamically. PAN does not change the scale or location of objects in your drawing; it only changes the view.
You can change the magnification of a view by zooming in and out. ZOOM does not change the absolute size of objects in the drawing.