The notebook format looks similar to Mathematica. Using Mathematica, I found it did indeed solve the problems mentioned in the article (e.g., having to choose

The notebook format looks similar to Mathematica. Using Mathematica, I found it did indeed solve the problems mentioned in the article (e.g., having to choose names for graphs), but led to its own problems (e.g., I would organize graphs by idea, but then lose track of the chronology). Still, used the right way, it was an improvement. (And of course Mathematica is proprietary and not free.)