[Zope] search on multiple indexes

Is it possible to search on multiple indexes at one time? The scenario is this: I have a simple text input field where I enter a word, e.g. 'house'. I would like to find all documents which contain the word 'house' either in the PrincipiaSearchSource -OR- in the title. ---------------------- Goeldi.com - eBusiness ---------------------- www.goeldi.com web@goeldi.com Fon +41-61-7330555 Fax +41-61-7330556 ----------------------