The namespace www.keyshot.com/3mf/2021/10 contains:
- Transparency_distance [m] (number)
- Scattering_coefficient [1/m] (three numbers, one per color channel)
- Absorption_coefficient [1/m] (three numbers, one per color channel)
- Diffuse (name/code of Pantone color)
- CMF (User defined fields and values) Only text and numbers are supported (no thumbnails).
Metadata fields are only written into the file when materials using them are exported.