MVR does not define the scale for 3DS models

[RichardTea]

The 3DS format is unitless, so the MVR specification needs to specify the units for a 3DS model used within MVR.

From inspection of MVR files exported by Vectorworks, it appears that for 3DS files, 1 unit == 1 mm

Note: Khronos glTF v2 specifies that 1 unit == 1 metre.

[reneberhorst]

As we outdate 3ds to glb we think it is done by adding some documentation. We will add to the documentation that MVR should always refer to "mm" for the 3ds model.