PAN allows you to redefine the center of a selected
viewport, relative to the part. The result looks as though
the viewport is shifted with respect to the part. This
option is assigned an Immediate Mode command. This option
is modal, (i.e., repetitive).

Use this option when you do NOT want to alter coordinate
data, as when viewing different parts of a zoomed drawing
to add detail.

A frame-like box surrounds the part and attaches itself to
the cursor to represent the viewport position. The
crosshair cursor now represents the center of the part. As
the box is moved, the part is scanned.

Indicate a new center position for the displayed part 
using one of two methods by either entering the x, y 
coordinate values for a new center position and pressing 
<Enter> or moving the cursor to a desired location and 
pressing the cursor button. 

The part is repositioned in the viewport.

Press <Enter> to accept this new position.
