The Node Chart is a live visual representation of how your system is performing. It is customisable so as to allow you to see the things most important to you.
Appears at the bottom of the screen and shows you the overall condition of your system and the most important warnings.
If you hover your curser over the icon you will see a Support Tip as to what it means.
At the bottom right corner of the node chart there is a settings button that allows you to customise your Node chart.
There are 4 parts of the Node Chart you can customise: The Cell Chart, Bypass Chart, Top Digits or Right Digits.