I believe the "issue to" is what's often known as a 'weasel clause'. You could essentially set everything you'd like there...lots of people will include a little something like "issue to favorable funding" or "issue to enterprise partner's acceptance" to present them selves a simple again-doorway out of your contract http://molbiol.ru/forums/index.php?showtopic=928457&st=950&p=6086991#entry6086991