Tag controllers

Sometimes, you may want to use custom layers as controllers (for example, if you designed it yourself, or want to use any existing layer as a controller).
In this case, you can use this tag tool on these layers so Duik can recognize them as controllers when using other controller tools, like Extract controllers ¹ or include them in the Auto-rig ².

Duik will add a new layer marker on the first frame of the layer, named Controller.