The Glance Bar gives a visual
summary of the "shape" of the changes in the files.
The bar is a scaled representation of the files.
Colored lines/blocks are drawn to indicate changes in the files; the coloring
and the shape blocks reflect the color and shape of the actual changes.
Black bars are drawn on the sides of the glance bar to show the
current scroll position of the files.
As the mouse moves over the Glance Bar, the corresponding line numbers
from the files are shown in the Status Bar. A star
* is used
when the corresponding line is a Void.
You may click on the glance bar to scroll the file panels to