All searches in the database use the option "Begins with", except the Simple Search and Short title search which are fulltext.
Searching Personal name, Owner, Place name, Filmed copy, Special features
A search for A finds all beginning with A...
A search for =Abraham finds that word exactly
A search for several words in the same field finds all records containing all of these words.
A search for an exact match use quotation marks ("Leiden, UB")
A search for 1650 finds all catalogues associated with that year.
A search fro 1650-06 finds all catalogues associated with June 1650.
A search for 1650-06-07 finds all catalogues with that date.
A search for 1650...1800 (dots included) finds all catalogues between 1 January 1650 and 31 December 1800.