zentao/extension/ipd/execution/ext/lang/en/ipd.php

<?php
$lang->execution->disabledTip = new stdClass();
$lang->execution->disabledTip->startTip      = 'After the "%s" finished，The "%s" can begin!';
$lang->execution->disabledTip->taskStartTip  = 'After the "%s" closed，The "%s" can start task!';
$lang->execution->disabledTip->taskFinishTip = 'After the "%s" closed，The "%s" can finish task!';
$lang->execution->disabledTip->taskRecordTip = 'After the "%s" closed，The "%s" can record task!';

$lang->execution->disabledTip->closeTip  = 'After current stage point passed, can close stage';
$lang->execution->disabledTip->launchTip = 'The current stage has not started, Unable to close stage';

$lang->execution->parentStage = 'Parent Stage';

$lang->execution->parentNotEmpty = "Parent not empty.";