It is possible to resize the GPS window during any flight session. However, it will resume to its default value once FSX is terminated.

To make the change permanent:

1. Open the panel.cfg of the aircraft to be changed
2. Locate [Window02] section
3. Decrease the value of window_size for smaller window (0.4 or 0.35 represents 80% or 70% of the original size), or
4. Increase the value of window_size for larger window

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