Why does it exist?

it doesnt exist on my keyboard

>>56968792
micro keyboards (~88 keys) arent real keyboards

all full size keyboards have them

>>56968711
What does it even do?

it's for spreadsheets and some cli work I think

Because Sys req. needs company

>>56968711
It's the default toggle hotkey for Reshade

>>56968802
Wrong

When enabled, it allows you to scroll around in an Excel spreadsheet. Don't remember any other functions of it but I'm sure you can find them on the following web site:

https://www.google.com/

In old terminal windows scroll lock is used to toggle between arrows controlling command history or scroll the buffer.

I'll put in a way that's newfag friendly:
Scroll lock off: Up key shows you the last command you did.
Scroll lock on: Up key will scroll the screen up like the browser's scroll bar.

This shit still works last time I tried FreeBSD, might work on linux too.