Xapian user search query syntax

Andrew Bernard <[email protected]>
Newsgroups gmane.comp.search.xapian.general
Message-ID <CAK5QfnXpkarctP8mt_GHPKUfZcTF78WFO1T8fk-utuxHQ3Grsw@mail.gmail.com> 
I am using Xapian as the search engine in Hyperkitty for GNU Mailman 3. Is
there a page of instructions for end users on the search syntax, such as
wildcards and boolean searches? My end users would appreciate such a thing.
I am unable to find anything like this.

Andrew Bernard
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