zentao/extension/ipd/testtask/ext/lang/en/zentaomax.php

<?php
$lang->testtask->related       = 'Product And Build';
$lang->testtask->typeTips      = 'Joint testtask cannot be modified';
$lang->testtask->linkedStories = 'Stories';
$lang->testtask->demand        = 'Demand';
$lang->testtask->joint         = 'Joint';
$lang->testtask->unit          = 'Unit';

$lang->testtask->jointList['0'] = 'No';
$lang->testtask->jointList['1'] = 'Yes';

$lang->testtask->myInvolved       = 'My Involvement';
$lang->testtask->members          = 'Members';
$lang->testtask->featureBar['browse']['myinvolved']  = $lang->testtask->myInvolved;