GLTF Extras and Saber Metadata¶
USF model format contains a lot of Saber-specific metadata for model that is not supported by the GLTF standard, mainly its Affixes and Materials.
Example of the Extras section of the GLTF standard:

You can edit and adjust Saber Metadata by opening a GLTF file in a text editor and searching for the extras JSON property. Alternatively, you can use Blender to add and edit some data in the Custom Properties of Scene, Object and Mesh tabs.
Custom Properties section of the Mesh tab:

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