if you type in
\n it creates a new line
if u constantly do \n \n \n \n \n \n \n \n \n \n \n \n \n like that (without spaces in between the \n) it wipes out world chat.
you can make fun things such as the bunny bug
\n (\_/) \n (='.'=) \n (")_(")
or even make symbols with the smilies on the game have fun ^.^