## 14.4. The CGNS Export Data Format

By default, all boundary results export files are written in CGNS V2.4 format. This is a completely open format and the source code for the library can be downloaded from http://www.sourceforge.net. Examples and documentation are also available from the official CGNS website at http://www.cgns.org. You might also find it useful to download and compile the CGNS Tools from the source forge site as well. The ADF Viewer in particular is useful for inspecting the CGNS files written by the flow solver.

Even though the format is fully open, there is still considerable room for picking various options such as how files are named and exactly how they are internally structured. This section documents most of that information.

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