input: [Description] This cookie stores the type of referral used by the visitor to reach your site, whether via a direct method, a referring link, a website search, or a campaign such as an ad or an email link. It is used to calculate search engine traffic, ad campaigns and page navigation within your own site. The cookie is updated with each page view to your site. [Expiration] 6 months from set/update. [Name] 
output: __utmz
options: _ _ u t m a
options: _ _ u t m b
options: _ _ u t m c
options: _ _ u t m z
options: _ _ u t m v
options: _ _ u t m x