        } elseif ($token instanceof HTMLPurifier_Token_Empty) {
            if ($this->_flashCompat && $token->name == "param" && !empty($this->_flashStack)) {
                $this->_flashStack[count($this->_flashStack)-1]->param[$token->attr['name']] = $token->attr['value'];
            }
            $attr = $this->generateAttributes($token->attr, $token->name);
             return '<' . $token->name . ($attr ? ' ' : '') . $attr .
The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.