halfapagecorporule
KHTangentI think the origin was that Surface devices had a dedicated Office button, so you could press Office+W to open Word and such. Office+L opened LinkedIn
But this button was internally just mapped to Ctrl+Shift+Alt+Win, giving this shortcut. I am actually impressed that it uses your default browser though instead of forcing Edge.
I have a Microsoft USB-keyboard for my Linux machine, I should really find out how to remap that key to something.
I bought it because it was the only one that I could find at an in person shop, that had an ergonomic bump and keys that have more than a millimeter of travel.
O works for Outlook, which I actually find useful.