Instructions:
- Drag Organisms to where you want them
- Shift-click on the workspace to add a node
- Click on an item (organism or node) to select it. It's border will turn red
- When you have two items (organism and/or node) selected, you can link or unlink them
- Links will remain connected when you move items.
- Click "Label" to add a text label.
- Click "Delete" to delete a test label or node.
- Select two objects connected by a link and click "Split" to add a noew node in the middle of the link.