MDL 3 Tools

MDL 3 Tools are shown and hidden via the Bugin Tool Toggle action, which you can find in the Transform tab There is also a setting called Bugin Toggle Default to automatically show these tools

MDL3 Group

This will tell the exporter that the selected group will be apart of the MDL

MDL3 Glow

This will make the selected group glow

MDL3 Disable Shading

This will disable shading on the selected group