AND is the default. That
is, a search for dog and cat returns all
messages that contain those words anywhere.
QUOTES (") allow searches for phrases. That is, a search
for "dog cat" returns all messages that contain that
exact phrase, with space.
MINUS (-) eliminates words. That is, a seach for dog
and -cat returns all messages that contain dog
but not cat. You can MINUS a phrase in QUOTES, like
dog -"siamese cat".
The engine is not case-sensitive and searches the title,
body, and
author.
