The Pinger sub-application expands on the common ping program. However, Pinger
will generate a real time graph of the network over several minutes, days or even weeks.
 When an ICMP Echo Reply timer expires, a vertical red line will be drawn across the graph grid.
When a packet arrives out of sequence a vertical yellow line will be drawn across the graph grid
Otherwise a blue line indicating RTT will be drawn with respect to the local set baseline.