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WRL

WRL is an extension of the VRML (Virtual Reality Modeling Language) format, which enables browser plugins to display virtual reality environments.

The WRL file contains data about the coordinates of the initial viewpoints, vertices and faces, as well as surface colors, transparency, textures, etc.

The WRL format is saved in ASCII text format and can be opened with various CAD programs such as Parallel Graphics Cortona3D Viewer and IMSI Design TurboCAD.

PRT

A PRT format is used to store components of 3D CAD models. It may contain lines, surfaces, textures, dimensions, and metadata.

The .prt extension is mostly associated with the Siemens NX Part (PRT) file type as an acronym for "part". PRT files may be exported to various standard CAD and 3D modeling formats (e.g. OBJ and STL) in addition to being utilized natively in Siemens NX.

The PRT file is also a part created by PTC Creo Parametric 3D software. In PTC Creo, project part files can be combined in a single assembly file with an ASM extension.

Despite the same extension name different CAD software produce PRT files differently, i.e. PRT files produced with Creo are not the same as PRT files generated from NX.

The PRT extension is also compatible with Dassault Systèmes SOLIDWORKS.

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