Content on this site is organized using two methods:
Any content node will be a member of one or more groups. It can also be "tagged" with zero or more topic keywords.
Groups are fixed. We will probably not be adding any more. They are contain all types of content. The group page provides tabbed lists to all content related to the group. The news for each group is also listed on the front page (home) of the site.
Topics are keywords that should describe the information contained in a node. They can be added when a node is created or modified at a later date. They are designed to link related similar information.