DXF, drawing interchange format, or drawing exchange format, is a tagged data representation of AutoCAD drawing file. Each element in the file has a prefix integer number called a group code. This group code actually represents the element that follows and indicates the meaning of a data element for a given object type. DXF makes it possible to represent almost all user-specified information in a drawing file.
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A DAE file is a digital asset exchange file format that is used for exchanging data between interactive 3D applications. This file format is based on the COLLADA (COLLAborative Design Activity) XML schema which is an open standard XML schema for the exchange of digital assets among graphics software applications. It has been adopted by ISO as a publicly available specification, ISO/pAS 17506.
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