input: [Cookie(s)] Service directory cookies [Category] Setting-based, Function-based [What the purpose is] Four cookies are used by various elements of this part of the site. Two of these cookies remember the text size and background settings picked by the visitor. One of the cookies is used to remember the expand view of the category tree on advanced search page. One cookie is used if you log in, to remember the ID number of your session. [How to block] To ensure this cookie is not downloaded, we recommend that you disable cookies directly within your browser. [What would happen] 
output: User won’t be able to change the page background colour or font size. User won’t see an auto-expand view of the category tree. Registered users won’t be able to log-in to the system.