10.08.00 panning and the view indicator
Panning allows a user to move the plans around the screen to view exactly what is necessary. Functionally, the same as using the scroll bars to move an image up/down and side-to-side but much faster.
Select the Pan icon, 
, from the Tools toolbar
Click and hold on the image (what is displayed in the Image window)
Drag the image to the desired view
The Pan Window shows a smaller view of the image in the Image View window. The View Indicator, see below, represents what is currently displayed in a zoomed view on the Image View window. The view can also be panned from this window.
Click and hold the black region known as the View Indicator
Drag to pan across the image in the window - the Pan window displays what part of the page is visible in the Plan View
From the Pan Window a user can quickly view another area by moving the cursor to the desired location and clicking. Click once to move the closest side of the View Indicator to the point clicked, double-clicking centers the View Indicator on the double-clicked point.
The View Indicator appears in the Pan View window when zoomed in on any portion of the Image Window. The View Indicator is black, and the more the zoom in increased, the smaller the indicator in the Pan View window becomes. If the page is zoomed to "fit page" or if the image is smaller than the Image View window, the View Indicator disappears from the Pan Window.
When the page is zoomed to only 10%, the View Indicator encompasses most of the Pan View because the majority of the plan is shown the Image Window.
When the zoom is set higher, to 80% for example, the View Indicator in the Pan View narrows down to that specific portion of the plan now displayed in the Image Window. This helps keep track of what portion of the plan image is being displayed at all times.
The View Indicator and Pan Window make panning to a specific region of the current page easy.
Position
the mouse on the View Indicator
in the Pan View window,
click and hold down on either the left or right mouse button - the
cursor becomes the Pan
tool,
While holding down the mouse button, drag the View Indicator to the desired location in the Pan View window - the plan in the Image Window moves relative to the mouse
Release the mouse button when the desired location on the plan is highlighted in the Pan View window - the new location is displayed in the Image Window