1. A computer-implemented method for structuring a function plan into function plan sections and for outputting the function plan to an output device so that the function plan is represented, wherein the function plan includes function modules and wherein individual function modules are connectable to at least one other function module via at least one function module connection, wherein a respective function plan section forms a predefined area for representing at least one part of the function plan, and wherein the function module connection between two function modules of different function sections of the function plan is a function module external connection, the method comprising: determining a number of function module external connections in an assignment of the individual function modules to the individual function plan sections if the function plan exceeds the predefined area of the function plan section, for each function plan variant; to the output device assigning the individual function modules to the function plan sections according to the function plan variant having a minimal number of function module external connections; and outputting the assignments according to the function plan variant.