I know how it works, that's why I asked. I have purchased Vectrosity and used it in places where I was going to do everything from scripts anyway and it was fine for that. Now however I just wanted add some quick line graph in an UI panel and it was much simpler to just attach a script that's inherited from MaskedGraphic and draws lines between points in OnFillVBO. It's visible in edit mode, too. Compared to that, the way Vectrosity works feels a bit convoluted and dated. Edit: Of course the lines drawn by the simple script don't look good at all, which is why it would be great if Vectrosity could be used like that.