I have build a KB with several categories, sections and sub-sections. If I click on a category you can see the expanding list below with sub-sections. Several Articles are assocated with the sub-section. However if I click on the red link the list of articles within the sub-section is not shown to the right!? (it stays on the last article viewed). However if I click the link in blue the list comes up below as expected. Why is the link to the left in the document hieraky not working?