The information page uses Client Tabs to manage out-of-the-box, site defined, organization defined, and user defined tabs. The information page will set the default action model (the model specified in the actions model XML file that defines tabs and their contents) on the TabSetDelegate, and then query the TabSetDelegate for any administrator or user created tabs.

The default, out-of-the-box implementation of the TabSetDelegate will return an action model that is the default action model, plus all administrator and user-defined tabs.

For more information about defining tabs for an information page, please refer to Customizing Information Page Components.