Watching the video one of the approaches that is interesting is only straight lines are allowed. The visual languages I have come across (Max/MSP and VVVV) all

Watching the video one of the approaches that is interesting is only straight lines are allowed. The visual languages I have come across (Max/MSP and VVVV) allow diagonal lines. I would reckon the strictness of the straight line has positive side effects – or avoids a class of negative side effects.