The majority of "additions" were added in the model_view module. A new feature that enables the user to insert, edit, and remove layers in the stack has been added in the popup menu of the profile interactor. The user may not insert layers before the first layer. The user may not remove layers when there are only two layers in the stack. Another feature that was added was the experiment dialog that allows the user to edit the current experiment. The user has the option to enable or disable step interfaces, edit the dA, the dz, and the roughness limit. When the user presses "Ok" on the experiment dialog, the profile is updated with the data.