[TYPO3-english] Add label column in ext_table.php ?

[Gregory Loichot]

Hello,

Just a sort and simple question : is it possible to add a label column 
in BE list mode ?

I know I can do (label_alt) that :

$TCA['tx_xxx_data'] = array (
	'ctrl' => array (
		'title'     => 'LLL:EXT:xxx/locallang_db.xml:tx_xxx_data',		
		'label'     => 'produit',
		'label_alt' => 'taux_pourcent',
    		'label_alt_force' => 1,	

But TYPO3 crops string if it is too long ! If it is not possible to add 
a new label column, is it possible to configure string crop length ?

Thank you !
Greg