This group contains some very useful browsers:
This submenu contains quick browsers for three very useful directories: home, root, and system configuration.
This menu shows the most recently used documents (works only with KDE applications for the moment). Clicking the element Clear History will remove those entries, what may be useful for privacy reasons.
This submenu shows your personal bookmarks just like Konqueror does. Refer to the Konqueror Handbook for more help on this.