Hi anarchist,
I'm afraid, this is not possible out-of-the-box. Although the Editor object can be adjusted in width and height, it doesn't support multi-line input.
A possible workaround might be to use the Keyboard object to catch the input and fill a static control with the text (these controls *do* support word wrapping). You would have to "simulate" a blinking cursor on your own though, if you need that - which might be a little more tricky.
Cheers,
Jerrot