I believe that it has modifier keys to allow access to function keys and the like. I think the idea is that all of the keys can be pressed without removing your

I believe that it has modifier keys to allow access to function keys and the like. I think the idea is that all of the keys can be pressed without removing your hands from home row, so it's more efficient/faster than a regular keyboard once you get the hang of it. Kind of like how VIM purists will insist that you don't need to use arrow keys to navigate.