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I guess sometime during the era of Win7, laptop manufacturers decided Function keys (i.e. F1 through F12) which had also previously taken on randomized secondary functions such as WiFi toggle, brightness, "media" control, cupholder deployment, and more; that long traditional F# functions should be secondary instead. I found this out a few years ago after having been off the MS cartel merry-go-round for a half decade. I was required to utilized spreadsheet Mark X (or was it March 10th 1900?) on nearly out of support Win7 laptops. I was attempting to use F2 to edit the contents of a cell since this had worked back in the days preceeding the existence of F11 and F12. The primary function of that key is now to dim the brightness on nearly all of those laptops. I am gradually rectifying the situation by rebooting, entering BIOS Setup, and changing the default back to the traditional behaviour. Nobody else has even noticed the changes.