Its is complitly different. I know DRAKON and it is very different what I see in the article. Also DRAKON is very different from other visual diagraming systems. DRAKON is open but system that is actually used in space programming (if i remember correctly is called Grafit-Floks, https://books.google.com/books?id=0g9kDAAAQBAJ&pg=PA198&lpg=...) is not open and as far as I know is not in market. If you are interested in DRAKON there is a forum.drakon.su which has english section and on that forum is made by inventor of DRAKON and he participated in discussion. DRAKON has also wikipedia page.
