Nodes are the building blocks of a model in GenerativeComponents. At the time of creation, every geometric node has to be defined with respect to a reference of a compatible type. When creating a node, GenerativeComponents lists which references are required as inputs for a given node, depending on its technique. These are called parameters. Once all necessary parameters are filled in and the node has been created, the Graph visualizes the associations between the newly created nodes and the reference nodes that define its dependencies.