a cookie question?

Hi folks,
Curious about the lynx_cookies file.
I have always wondered the difference between a false/false cookie, and a 
false/true one.
Was checking on mine, some of my google cookies are gone, but that may be 
due to the changes.
There are allot of them, in general, some false and some true.
when Lynx adds a cookie is the most recent one put at the top, or the 
bottom?
and are the false / false or false / true ones  important in terms of 
which is more successful?
Thanks,
Karen