Comparing two models

When you have an mdl/slx model, to compare it with another version of the same model:

1. Open model in Simulink.
2. Go to Analysis menu, click Compare Simulink XML Files...
3. Select the model file you want to compare with the opened one.
4. Simulink will open a window displaying the differences. When you click on a line, it will display both models, highlighting the differences.