"Only Draw with Apple Pencil“ (iPad)?

In Settings (iPadOS) I can check on/off "Only Draw with Apple Pencil“.
What would be the alternative to drawing? I assume writing. But why is a setting for it needed?

The alternative way to drawing with your pencil is with your fingers :smiley: That setting is automatically turned on when you use the pencil for the first time, we then suppress input from your fingers.

Ok, I understand. I changed th text a little bit to make it more clear.