If FIELD is an empty string (or nil), entire article body is searched for.
If optional 1st argument BACKWARD is non-nil, do backward instead.
If optional 2nd argument UNREAD is non-nil, articles which are
If FIELD is an empty string (or nil), entire article body is searched for.
If optional 1st argument BACKWARD is non-nil, do backward instead.
If optional 2nd argument UNREAD is non-nil, articles which are