* Search (and) = a search operation of two or more search terms shows the titles that contain all the search terms entered * Search (or) = a search operation with two or more search terms shows all titles that contain at least one of the search terms. * Browse = with the selection Browse you can scan the index for the search terms you have entered. * After a search it is possible to "enlarge", "restrict", etc. the results.
for help about the search key, please click the icon