Below you will find a version of the treebuilder to experiment with. What you see here in the beginning will become the upper node of the tree. Clicking one of the green buttons will add a node directly below the current one, either to the left or right. You may then enter a node label. With the edit button you are able to change this label at a later time. Above the builder a tidier picture of your tree will be drawn. It is updated each time you change something with the builder.