This window pane displays Help Viewer's online Help index, which lets you find information about Help Viewer by clicking index keywords. When you click an index keyword, the first related Help topic displays.
What happens if an index keyword is related to multiple topics? To see and open additional Help topics that are related to the index keyword, open the Index Results window pane. Then, when you click an index keyword that is related to more than one Help topic, those topics are listed in the Index Results window pane. You can then click any of those Help topics to display it.