Expiressets an expiry date for when a cookie gets deleted
Max-agesets the time in seconds for when a cookie will be deleted (use this, it’s no longer 2009)
Domainattribute specifies which hosts can receive a cookie. If unspecified, the attribute defaults to the same host that set the cookie, excluding subdomains. If
Domainis specified, then subdomains are always included. Therefore, specifying
Domainis less restrictive than omitting it. However, it can be helpful when subdomains need to share information about a user.
Domain=mozilla.org, cookies are available on subdomains like
developer.mozilla.org. But if you don't, the cookie won't be sent to subdomains.
Pathattribute indicates a URL path that must exist in the requested URL in order to send the
%x2F("/") character is considered a directory separator, and subdirectories match as well.
TRACEto IE6.0 SP2.