I mean you’re looking at it. That’s the whole script. It just jumps you to that line number. As efn points out, it’s not super great, since anything that changes your line numbering will in turn change where the jump instruction goes to. I spent a little time a while ago trying to guess my way into a hidden “label” instruction but didn’t find one.
Otherwise you can check this link: Jump Flag Program Node - #4 by eric.feldmann
Maybe that’s something you can use.