Hello Arturo,
I not consider an expert by myself, but we also have SAP for retail and indeed one to the way to find out is the legend in the top bar says "SAP Easy Access SAP Retail", so that system its retail.
Sap for retail not only adds/change functionality in MM/SD but it also does in other modules. In an installation you basically install the base ERP software and then you turn that system into retail by installing the retail addon.