43. The method of claim 39 , wherein the first set of modifications is determined while the graphical model or the code is incomplete.
39. A computer-implemented method for modifying a system representation, the method comprising: simultaneously providing, using the computer: a graphical model implemented in a graphical modeling environment, and code related to the graphical model implemented in a text-based environment; receiving a user action associated with the graphical model and/or the code; analyzing the graphical model and the code related to the graphical model; automatically determining, using the computer, a first set of modifications for modifying one of the graphical model or the code, the first set of modifications determined live with the providing of the graphical model and the code, the first set of modifications determined based on the user action and based on the analyzing; and displaying, on a display device, the first set of modifications within the one of the graphical model or the code.