[Koha-devel] Boolean operators in koha opac search

Dear friends, Does KOHA support Boolean (AND, OR, NOT), relational (>, >=,<,=<,=) and positional (NEAR and PROXIMITY) operators in OPAC search? I tried to combine two keywords with simple AND, OR and NOT operator. But it is not working. Is there any symble to indicate these operator such as & for AND, | for OR and ^ for NOT? These symbols (&, | , ^) are also not working for combined search. Help me.... Parthasarathi Mukhopadahyay VU, DLISc, India -- India.com free e-mail - www.india.com. Check out our value-added Premium features, such as an extra 20MB for mail storage, POP3, e-mail forwarding, and ads-free mailboxes!