[Plugin: NextGEN Gallery] Tag Array

What is the array variable for gallery tags? I’d like to make a conditional check in the NGgallery loop. Something like this?

if (in_array("theTag", $theTagArray)) {
    //do something different with the output;
}
else (!in_array("theTag", $theTagArray)) {
    //don't do anything different;
}
?>

https://www.ads-software.com/extend/plugins/nextgen-gallery/