unnecessary knowledge #7

Hello all together!
It's time for some knowledge...well if you need it that's the other thing but let's start
Today it's about the keyboard...Maybe some already know it...but anyway...Then you know it again.
And it is about these two sticks on the J and F.
What are they for?
These sticks are as orientation for the 10-finger writing.
That was it again...

-Hive on and CU next time