I have only checked this using IE 8 and Firefox 12 on XP with curl9 (Curl 8.0)
The one mention which I found in the docs is as follows:
|| Expires and other fields may return null,
|| If expires means null, then this is a cookie
|| that only lasts until the current session
|| ends (i.e. user closes the browser) .
but this is not my result in my few tests. Those few tests used .curl applets and NOT applets as HTML embedded objects (the url is to a .curl page.)|| If expires means null, then this is a cookie
|| that only lasts until the current session
|| ends (i.e. user closes the browser) .
It may be worth bearing in mind if you use, say, the set cookies proc.