This is a 3D project file created with Autodesk Maya application. It contains large list of commands to specify information about the file. A Maya file can be opened and edited in any text editor to fix any issues with the commands in case a file gets corrupt. These files contain information for defining the 3D Scene information such as geometry, lighting, animation, and rendering.
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A file with .usd extension is a universal scene description file format that encodes data for the purpose of data interchanging and augmenting between digital content creation applications.
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