On Fri, May 23, 2008 at 5:04 AM, Roan Kattouw <roan.kattouw(a)home.nl> wrote:
Expressions with parentheses like "Living people
AND
(American people OR Canadian people)" aren't supported yet, but can be
emulated with "Living people AND American people OR Living people AND
Canadian people" (more complex expressions will probably be impossible
to emulate that way, and of course the extension should really support
parentheses, I'm working on that).
Any expression involving only AND and OR should be possible to express
without parentheses, if AND binds more tightly than OR or vice versa.
http://en.wikipedia.org/wiki/Canonical_form_(Boolean_algebra)