====== BBC Command ====== BBC,,,,, This command loads a backbone curve from a file. The file format is a list defining the points in X Y pairs. The command will attempt to load the number of points in the points argument, so the user must the number of points in the file before attempting to load. * num - number of the backbone curve * type - type of backbone curve * points - number of points in the curve * yield - yield point for the curve * file - file name containing the backbone curve points