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 # Example 26: Modify OpticStudio Preferences

 Last update: 09.03.2026 

Ex 26: A new system is opened with a user-specified OpticStudio.CFG configuration file. All available OpticStudio Preferences are modified and displayed.

```
Input: 		None

Output: 	Console text

```

[C#](example_26_cs.md)

[C++](example_26_cpp.md)

[Matlab](example_26_m.md)

[Python](example_26_py.md)