I'm looking at this and I have no idea what it means. None. copy? to where? Where is the default located? What do they mean by a table? what is field mapping? Is there a Step by step tutorial that explains this?
By default, this element syncs in with Joomla's tags system. They can be managed via Joomla's core Tags component.
While default table is #__tags, there is also possible to choose a custom table for separate tags. But ATM it has no field mapping so the table should have at least the following fields:
`id` int(10) UNSIGNED NOT NULL,
`parent_id` int(10) UNSIGNED NOT NULL DEFAULT '0',
`level` int(10) UNSIGNED NOT NULL DEFAULT '0',
`path` varchar(255) DEFAULT NULL,
`title` varchar(255) DEFAULT NULL,
`alias` varchar(255) DEFAULT NULL,
`published` tinyint(1) NOT NULL DEFAULT '0',
`created_user_id` int(10) UNSIGNED NOT NULL DEFAULT '0',
`created_time` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
`language` char(7) DEFAULT NULL,
`version` int(10) UNSIGNED NOT NULL DEFAULT '1',
and indexes on (`published`,`access`), `access`,
, `path`, `alias`, `language`.
You can also just copy Joomla core tags table.