libraries/ManiaLib/Application/Request.php
function restore($name)
    {
        if (array_key_exists($name, $this->requestParams)) {
            $this->params[$name] = $this->requestParams[$name];
        } else {
            $this->delete($name);
        }
    }
function restore($name)
    {
        if (array_key_exists($name, $this->requestParams)) {
            $this->params[$name] = $this->requestParams[$name];
        } else {
            $this->delete($name);
        }
    }
Restores a GET parameter to the value it had when the page was loaded

@param string