Yes....it's saved using pickle.

Unfortunately I have no intention of changing this, because Python does the data conversion (in other words: serialization) automatically. To change that I have to write a conversion routine, which would give a lot of work.

In the next version the only change for now, is the inclusion of one information on the details to say what should be the order of viewing them on screen.

There is no plan in changing this. My first priority is keep the program good enough to put it in the extras. After that I will start to think in synchronization.