Okay, Shape3D is bringing the 3D graphics world onto our door step, but I'm hoping you see my point.
I personally think, and not to rain on your fire, as PDN is an image editor there is little need for word processor functions when we already have (no doubt expensively paid for) tools to do so.
That's what I do for larger bulks of text, I type it on Word, go through the rigmarole of testing how bad my own spelling is, then copy that over to PDN.