Upper box searches on body of documents retrieved with Boolean logic in larger, lower box on Advanced screen. Automatic Fuzzy AND Automatic Fuzzy AND , but sub-searching can be just as powerful. Automatic Fuzzy AND . Case Sensitivity Yes. Upper case retrieves only matching upper case.
Lower case retrieves either lower or upper case.
Also accent and character sensitive. Other upper case ignored. Upper case ignored. No. capitals ignored. Initial capitals cause phrase search.