File [File] The OpenStreetMap file to be loaded. OpenStreeMap files can be downloaded from http://www.openstreetmap.org/ by choosing the "Export" section on the top menu of the site.
Center Results [Boolean] Indicates if the loaded data should be centered on the origin (0,0,0) or not. Easier for data manipulation and to reduce precision errors.
Tags [Attribute] The attribute where tag information associated to each Openstreetmap feature is stored.
Meta [Attribute] The attribute where meta information (id, author, etc.) associated to each Openstreetmap feature is stored.