Sets the text to render for this font entity. This sets both the private properties "_text" and "_renderText". If auto-wrapping has been enabled then the "_text" remains equal to whatever text you pass into this method but "_renderText" becomes the line-broken text that the auto-wrapper method creates. When the entity renders it's text string it ALWAYS renders from "_renderText" and not the value of "_text". Effectively this means that "_text" contains the unaltered version of your original text and "_renderText" will be either the same as "_text" if auto-wrapping is disable or a wrapped version otherwise.