Each setting in a Workspace Control environment contains a GUID, with which it is uniquely identified in the Datastore. When you create a Building Block of a setting, its XML structure contains an overview of this setting, followed by its GUID.

If you adjust the GUID of a setting in a Building Block (by replacing a number or character with another number or character), you can prevent overwriting the original setting by creating a clone of it. This method can be useful if it is not possible to create a clone of a setting using the Management Console or if you want to test a modified setting first without overwriting the original setting.