View difference with reference model

Pirana provides a tool to show code differences, similar to the diff functionality on Unix systems. If one model is selected and the diff tool is activated, Pirana will show the difference between that model and the reference mode (if specified). If two models are selected, Pirana will show the code differences between the two selected models.

Select a model in the list.

Right-click the selected model and choose Model > Code difference between models from the menu.
Or
Select Results > Run reports > Difference with reference model.