what exactly is it ?

http://www.lostmarble.com/moho/manual/tut05/08/index.html
i came across this page while surfing different animation forums , as it is defined as a tutorial for another tool , i tried to understand it while keeping in mind TBS techniques but couldn’t get it , can some one please explain me what exactly going on their or is that possible in toon boom products ,thanks.

This can be done in TBS although the views are different. You use a combination of camera view, side view and top view and you use motion paths. I believe the 3D space viewing is much easier to navigate in Digital Pro but TBS has the tools to move through and use 3D space. -JK

thanks JK for responce , i myself dont find any difference between creating motion path in TBS & Digital Pro or may be i haven’t enough knowledge of DPro on creating advance motion path which you are talking about .