Display categories are used to configure both the categories and the pages for case determination decision details rules. An example of a category might be 'Household Income' and the page defined may be used for displaying the output of a decision details rule set that explains the breakdown of household income per household member, and household expenses possibly. In order for details to be displayed for a decision within a Product Delivery case, there must be at least one category defined and this can be the basic CREOLE category and display page (CREOLEDisplayRules_basicCaseDisplay) that will list the objectives for which the client is eligible. The basic page is all that is required for the simple product. This will be discussed in greater detail in the next chapter.