1. A method for configuring a node in a graphical program, the method comprising: displaying a node in a graphical program, wherein the node is configurable to perform a plurality of operations depending upon user input specifying configuration information for the node; displaying a graphical user interface (GUI) for specifying configuration information for the node, wherein the GUI comprises information useable in guiding a user in configuring the node to perform one or more operations from the plurality of operations; receiving user input via the GUI specifying one or more desired operations for the node from the plurality of operations; programmatically generating graphical source code for the node to implement the one or more desired operations, in response to the user input.