AnchorPoint and ContentSize

Is the anchor point relative to the content size?

What is the content size relative to? (The anchor point, I assume?)

I have a coordinate system based on (0,0) with a tree of sprites, most in the postive quadrant, but some negative. So in that coordinate system, say it goes from (~~10,~~10) to (20,20).

When I position it, I’m locating the origin. That’s fine. Most is to the top right, some is to the lower left.

But I want to set the anchor point of the entire tree to something like (10,10). The root of the tree is an empty node (the content is in the children). So what do I set its content size and anchor point to?