>I am attempting to troubleshoot a VFP 9 program with an open debugger. This is Windows 10. But when I press on F8 (go into the code), some Project window opens. When I press on F6, it appears that some brightness slider appears. These appear to be native F10 features. How can I disable them so that I can go through the debuger?
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>TIA

On my keyboard I have multifunction keys on the F-Keys, meaning if I press FN+ESC it switches between the native features you describe, and alternatively the normal F-Keys. You should see on those keys the F-Symbol and also a smaller symbol of the native function.