The index is one of the more popular methods of navigating through online help information.
The index contains a list of keywords, through which you can scroll.
If you have a keyword in mind, specify it in the field at the top of the list box.
As you type a keyword, the list box scrolls to find the closest match. Look not only at the topic highlighted, but also at the topics immediately underneath it to see if the help system found your topic.
Like any keyword search, you may find that it takes several tries to get to the topic for which you are looking.