outputting groups , subgroups , and model lists

Hi there , 

iam new to ARIS scripting , i was looking for a way to output the selected groups and the models and sub groups under it 

something like this :

Group 0     model1
                  model2

                   subgroup     model1

                                        model2

Group 1    model1
                  model2

                   subgroup     model1

                                        model2

any ideas ?

Million thanks 

Ahmed