11. A computer system for adding non-graphical dependency information to a graphical model comprising one or more components and having a visual representation, the computer system comprising: a processor for: providing a graphical model in a graphical modeling environment, the model comprising one or more evaluatable components; adding non-graphical model dependency information to the graphical model, where: the non-graphical model dependency information specifies an order in which at least some of the evaluatable components are evaluated, the model includes a visual representation that remains unchanged when the non-graphical model dependency information is added, the model supports a first variation in which the evaluatable components are evaluated in a first order when the graphical model is evaluated, the model supports a second variation in which the evaluatable components are evaluated in a second order when the graphical model is evaluated, and the first order differs from the second order; accessing additional non-graphical model dependency information, where: the additional non-graphical model dependency information allows a determined order of evaluation for the evaluatable components when the graphical model is evaluated; and a storage for: storing the graphical model with the non-graphical model dependency information.
11. A computer system for adding non-graphical dependency information to a graphical model comprising one or more components and having a visual representation, the computer system comprising: a processor for: providing a graphical model in a graphical modeling environment, the model comprising one or more evaluatable components; adding non-graphical model dependency information to the graphical model, where: the non-graphical model dependency information specifies an order in which at least some of the evaluatable components are evaluated, the model includes a visual representation that remains unchanged when the non-graphical model dependency information is added, the model supports a first variation in which the evaluatable components are evaluated in a first order when the graphical model is evaluated, the model supports a second variation in which the evaluatable components are evaluated in a second order when the graphical model is evaluated, and the first order differs from the second order; accessing additional non-graphical model dependency information, where: the additional non-graphical model dependency information allows a determined order of evaluation for the evaluatable components when the graphical model is evaluated; and a storage for: storing the graphical model with the non-graphical model dependency information. 12. The computer system of claim 11 , wherein the non-graphical model dependency information influences model execution.