How to make symmetric/reflected/mirrored animation?

I want to make an hand drawn animation that is repeated 4 times, reflected, so it creates images like, for example, this:

Of course is don’t want to do this afterwards. I just want to see what is happening and how it’s looking, in real time. So that when you draw a line, it appears four times on your sceen… And you can really start sketching and search for cool things you can create this way… Much like the ‘‘symmetry modifier’’ in 3DS max, for example.

Is this possible in Toon Boom?

Thanks in advance. :slight_smile:

for those who wonder: