Importation is graphically shown as UML comments. The name of the file that contains the imported model is given in the comment.4.2 As an example, Figure 4.12 includes state B, where submodel submodel.des (des, short for ``model description'', is the postfix used by SVM) is imported.
The current version of the DCharts meta-model in AToM does not support the specification of importation.