Where lists of topics are categorised we have presented them as expandable lists. When the topic is collapsed, it has an image next to it that looks like this indicating that topics exist below it in an hierarchical structure. Note that clicking on the text will not activate the expansion - you need to click on the graphic, which will look like this when the list is expanded. Using this method will expand one section of the list at a time - if you wish to expand the entire list, use the Expand All option. Similarly, use the Collapse All option to collapse the list.
This is an expandable list - try it out!