This is documentation about a configuration directive, which can be placed within Movable Type’s core configuration file,
mt-config.cgi, to customize the behavior of the system.
This optional value specifies a path within the site to which the cookie applies. Only documents in this path will be able to retrieve the cookie. Usually this is left blank, meaning that only the path that set the cookie can retrieve it.
To allow cookies for all sub-domains on movabletype.org the value is :