1. A computer-readable memory medium comprising program instructions for creating a graphical program, wherein the program instructions are executable to implement: displaying a first graphical program node in the graphical program in response to first user input, wherein the graphical program comprises a first plurality of interconnected nodes that visually indicate functionality of the graphical program, and wherein the graphical program is executable to perform the functionality; receiving second user input to configure the first graphical program node to perform a first operation; automatically generating a second plurality of interconnected nodes based on the second user input, wherein said automatically generating is performed without user input directly specifying the second plurality of interconnected nodes; wherein the second plurality of interconnected nodes perform the first operation during execution of the graphical program.