Use -1 as "unsetted" value do not change parameter order in old functions

Dominik Müller

2014-01-20 11ccaaaebe9b3ec24634901170961219299cf773

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<?php
$wb["head_txt"] = 'Install software package';
$wb["install_key_txt"] = 'Enter install key';
$wb["btn_save_txt"] = 'Start Installation';
$wb["btn_cancel_txt"] = 'Cancel';
?>