This is to see the description of metrics. In the metric tree users can right click on any metric or metric group and find this option. If the user clicks on a single metric, then it will show the description of this metric and its group. If the user clicks on the metrics group, then it will show the description of all metrics of the group.

There is an option to search keywords across all metric names and descriptions. Search option will not be available if you look at the description of one metric.