It's sort of like a tree, except that a node can have a main child and a connection of other children. That's neat, and another helpful step in organizing discu

It's sort of like a tree, except that a node can have a main child and a connection of other children. That's neat, and another helpful step in organizing discussions. I've always wanted something that is more like a graph structure, where you can reply to multiple comments. So a node can have multiple parents.