Reading xml with flash: CDATA or just text?

I’m thinking in developing a site entirely in flash; it will read a mysql db with text, and i think to convert the text with a php script to xml for reading it with flash.
So, when a title comes along, it writes it into the designed title tag, with no more than 45 characters. But when it comes to read the full content of an article, 100 characters or more… should i put it like CDATA? or just as text, like the title? i dont know which is the right way to do it, and why… but surely they both work