Sergey

It gives me next warning > 2022-07-29 08:39:19,258 [WARNING] py.warnings: \sverchok\utils\modules\polygon_utils.py:292: VisibleDeprecationWarning: Creating an ndarray from ragged nested sequences (which is a list-or-tuple of lists-or-tuples-or ndarrays with different lengths or...

This implementation can handle n-gons without warnings but it calculates normals using only 3 first points. It fits into logic description of the node but potentially can effect some layouts....

Completely forgot about this case. Also there is corner case when all 3 vertices are on one line. In this case the normal will be `(0,0,0)`.

> what happens to performance when the input-vertices are a numpy array? No difference

Cubic Spline node shares the same implementation and large input can be quite expected I guess. 

> Those features are also implemented in Animation Nodes in Omar's video and it is exactly what I would like to see in Sverchok. @DaveSledz Why just don't use Animation...

I've tried to create new category and it seems the button does not work at the moment.

Use group nodes instead.

Ah, well, node groups do not support frame info nodes inside. There is no documentation about them but I'm going to fix this soon.

I have the same behaviour in my computer. It also occurs during converting selected nodes, with frame 'nodes', into a node group. Probably we should call redraw function (if it's...