The Thumbnail View is another way of maintaining context while navigating.
- Select Tools > Thumbnail View to bring up this dialog.
- The current working view is shown as a red rectangle (above).
- You can move the gray rectangle around by clicking on the border and dragging. This re-positions the viewing area.
- There is also a black rectangle at each corner of the gray rectangle which can be dragged to resize the extent of the viewing area.

