I'm sorry, but it doesn't matter what IBM did in the 70s and 80s with keyboards, if shift+2 changes the zoom for everyone but a windows user using the number pad, thats a bug. Its a violated expedition and different between OSes.

Also, what is this writing style. Every sentence is numbered with options to tweet it, horizontal lines between each with huge amounts of padding and one to two images between each sentence. Is this even meant to be read by humans?