If working on a highly detailed portion of the image, you may want to magnify a portion of the window. To zoom in to some area of the window, first select the "View/Zoom in" option. Then drag out a rectangle with the mouse over the area of detail. When the mouse button is released, the area inside the rectangle will be expanded to encompass the entire window. To zoom back out, use the "View/Zoom out" option.
When zoomed in, you can pan to other areas of the window using the horizontal and vertical scroll bars.
You can return to the default view by using the "View/View[1:1]" option. Unless the window is square, the top or bottom portion of the view may not be visible. To see the entire coordinate space, use the "View/Fit to window” option. This viewing mode will leave dead space off to the right of the window, but guarantee the entire coordinate space will be seen.