TRACKING PEG HOLES

Hi.
I think remember that it was a old tool that I can’t find anymore (or maybe, my memories are betraying me)
In this tool we could see the peg holes and we could use them to match them with other peg hole from other layers. Thanks to that, we could import scenes frame by frame and we could match the layers.
I’m looking for it in ToonBoom and I can’t find it anywhere or anything similar.
Any clue about it?

Cheers