From PHPBB用户手册

# Table: 'phpbb_acl_options' 权限选项表
CREATE TABLE phpbb_acl_options (
	auth_option_id mediumint(8) UNSIGNED NOT NULL auto_increment, 选项ID, 自增
	auth_option varchar(50) DEFAULT '' NOT NULL, 选项名称
	is_global tinyint(1) UNSIGNED DEFAULT '0' NOT NULL, 是否通用
	is_local tinyint(1) UNSIGNED DEFAULT '0' NOT NULL, 是否仅限局部使用
	founder_only tinyint(1) UNSIGNED DEFAULT '0' NOT NULL, 是否仅限创始人使用
	PRIMARY KEY (auth_option_id),
	KEY auth_option (auth_option)
) CHARACTER SET `utf8` COLLATE `utf8_bin`;