$getCookie

Returns the value of the specified cookie.
Syntax
    $getCookie{cookie_name}{default_value}
DocumentationReturns the value of the specified cookie:

    Parameters:
      cookie_name, the name of the cookie whos value is requested.
      default_value, the value to return if the named cookie does not exist.
    Returns:
      the requested value of the named cookie.
Examples
username: <INPUT size=12 type=text NAME="Username" VALUE="$getCookie{Username}{}">

Result:
if a cookie "Username" is set, the value appears in
the textfield, otherwise nothing:
username:<Cookie>
GroupNet
Minimum required transaction-mode:NONE
Required scripting permission of the developerPERMISSION_FL_ADVANCED
Minimum parameters1
Maximum parameters 2