The value of the URL variable named by the RELOADKEY setting. When a URL variable by this name is added to the query string with a value matching RELOADPASSWORD's setting, the framework will reload regardless of its RELOAD setting value.
This can be used to force the framework to reload in a production environment.
Using the default values for RELOADKEY and RELOADPASSWORD, this would be done by appending ?init=true to the URL.