...
{pagepath} : Path of the current page without wwwroot.
{thisurl} : The complete URL of the current page.
{thisurl_enc} : The complete encoded URL of the current page.
{urlencode}{/urlencode} : URL encodes any content between the tages.
{rawurlencode}{/rawurlencode} : URL encodes any content between the tages tags according to RFC 3986.
{referer} : Referring URL
{protocol} : http or https
{referrer} : Alias of {referer}
{ipaddress} : User's IP Address.