10. A system for identifying and displaying differences between two block diagram models, comprising: a processor; a bus coupled to the processor; a memory unit coupled to the bus; and a storage unit coupled to the bus; wherein the processor and the memory are configured to: convert the block diagram models to respective first and second text-based models; identify differences between the first and second text-based models; merge identified differences into a third block diagram model which has been converted to a plain text format; and display the identified differences on a graphical user interface.
10. A system for identifying and displaying differences between two block diagram models, comprising: a processor; a bus coupled to the processor; a memory unit coupled to the bus; and a storage unit coupled to the bus; wherein the processor and the memory are configured to: convert the block diagram models to respective first and second text-based models; identify differences between the first and second text-based models; merge identified differences into a third block diagram model which has been converted to a plain text format; and display the identified differences on a graphical user interface. 11. The method of claim 10 , wherein the processor and the memory are further configured to: indentify blocks of text within the first and second text-based models which correspond to blocks of the high level block diagram-based model.