For the expert search, you must use the command language provided - such a search requires a good knowledge of the effect of the so-called Boolean operators and is only suitable for complex search queries that cannot be mapped using the input template of the field search.
With the help of the index search you can "browse" through alphabetically sorted lists. An index search is useful if you do not know the exact spelling of a search term (e.g. "questionnaire" or "questionaire"). In addition, the index search can provide information on further search entries.
The options for processing the search results are different in each library catalogue. You often have the option of saving your hit lists, sending them by e-mail or printing them out. (Trier UAS: You can obtain a printout of your hit list at the service desk.)