There are three buttons in this section, which maintains all the file-related functions.
Open (Ctrl + O) – Click this button to load the 3DS, OBJ or VNS files.
Export (Ctrl + E) – Click this button to invoke the export dialog box.
Reload (F5) – Click this button to retrieve the initial status of the currently used source file. All the changes you ever made will be discarded. You may also press F5 on your keyboard to reload the current file any time.