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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U3D (Universal 3D) is a compressed file format and data structure for 3D computer graphics. It contains 3D model information such as triangle meshes, lighting, shading, motion data, lines and points with color and structure. The format was accepted as ECMA-363 standard in August 2005. 3D PDF documents support U3D objects embedding and can be viewed in Adobe Reader (version 7 and onwards).
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