you can type in a 13 letter sentence, type in one letter press enter, type in the next letter press enter and on and on. spaces also count as letters so you can type a space into the box.
I have just started programming in c# and my dad showed my a program he made just like this (he is an awesome programmer) and this is just a remix of that. hope its not to cornfusing, :) love it, fav. it, comment on it, but most of all remix it!!