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+We use the following files as examples to demonstrate different functionalities of the application
+
+- **organizations.csv** is used for install organizations with the command:
+```
+  python manage.py initial_datas
+```
+- **federation-membership.xls** is a example of datas for offer credentials for NGOs that are members of a NGO federation.
+- **membership-card.xls** is a example of datas for credential of membership
+- **membership-card.ods** is the same credential as example of ods extension
+- **signerDNIe004.pfx** is an example of certificate of eidas1 for sign certificates as pdf with it. This certificate is an example of:
+https://www.dnielectronico.es/PortalDNIe/PRF1_Cons02.action?pag=REF_1116
+