You change wrapping by adding <br /> to the language file in between words
define('TEXT_TAB_TITLE_PROD_DESC', 'Product Description');
define('TEXT_TAB_TITLE_ADD_TO_CART', 'Add To Cart');
define('TEXT_TAB_TITLE_ADDITONAL_IMAGES', 'Additional Images');
define('TEXT_TAB_TITLE_CUST_ALSO_PURCHASED', 'Customers Also Purchased');
becomes
define('TEXT_TAB_TITLE_PROD_DESC', 'Product<br />Description');
define('TEXT_TAB_TITLE_ADD_TO_CART', 'Add To<br />Cart');
define('TEXT_TAB_TITLE_ADDITONAL_IMAGES', 'Additional<br />Images');
define('TEXT_TAB_TITLE_CUST_ALSO_PURCHASED', 'Customers Also<br />Purchased');
You can add any html code you want in the tab names.. images, styles, even some tiny flash code if you so choose :)
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