Wow, I can't believe I never noticed this before. IE will treat text in an element's title attribute as preformatted! It shows carriage returns and spaces in the tooltip! Try adding the following title attribute ( with returns as shown) to any element on a web page and then hover your mouse over it:
title="This title is
shown on
four
lines."
Unfortunately Firefox only shows the spaces properly, the carriage returns get messed up as odd blocks.