[Geary] documentation on built-in search syntax

[Chris van Dijk <cn vandijk hotmail com>]

Dear list,

Maybe I have just missed it, but where can I find a full list 
documenting the syntax of the built-in search? I have read somewhere 
(probably on this list or the bugtracker) about to:xxx and from:xxx, 
but what about e.g. logical operators? In general it would be nice to 
have a complete list as a reference on the wiki/faq.

Regards,

Chris