public function displayHelp()
    {
        printf("%s\n", $this->getUsage());
        printf("%s\n", $this->getDescription());


        // Les options non incluses dans un groupe
        if (count(self::$arr_opt)) {
            foreach (self::$arr_opt as $arg) {
                printf("%s\n", rtrim($arg));
            }
        }

        // Options faisant partie d’un groupe
        if (count(self::$arr_group)) {
            foreach (self::$arr_group as $group) {
                if (count($group->args)) {
                    print("\n\n");

                    if ($group->name) {
                        $name = $group->name;

                        if ($this->obj_color->label || $this->obj_color->bold) {
                            $name = new Ansi($name);

                            if ($this->obj_color->label) {
                                $name->fg($this->obj_color->label);
                            }

                            if ($this->obj_color->bold) {
                                $name->bold;
                            }
                        }

                        printf("%s\n", $name);
                    }
                    foreach ($group->args as $arg) {
                        printf("%s\n", rtrim($arg));
                    }
                }
            }
        }

        exit();
    }