Convert mxf to rgf

What is the difference between .mxf and .rgf?

Name: Material Exchange Format File; LEGO Mindstorms EV3 Robot Graphics File

Description: Multimedia format used by digital audio and video programs; contains captured audio and video data as well as metadata that describes the media stored in the file; designed by Society of Motion Picture and Television Engineers (SMPTE) as a standard container for audio and video data; can be converted into other formats, such as .AVI or .MOV.; The LEGO Mindstorms EV3 Robot Graphics File (RGF) is a proprietary binary file format used by the LEGO Mindstorms EV3 software to store robot graphic models. It is a vector-based file format that stores information such as the robot's 3D geometry, color and other visual properties, as well as the model's connection points, used for connecting with other LEGO elements.