Node is a collection of objects how you can create a folder in the windows where you can collate all your files into the folder.
In the similer fashion, you can create a node for a specific functionality and you can create all related objects like, text elements, loop conditions and others.
In the form builder you describe a smart form by a set of nodes. To do this, you will build up a tree structure on the left side of the user interface.
The first node is the root node, and successor will the follow.
