I would agree with the original poster. Having the ability to toggle between showing non-printing characters (spaces, tabs, line-breaks, and carriage returns) is very helpful, particularly when bringing in someone else's text. iamntz wrote, "you will be able to detect new lines by... you know... text going on the next line", but that doesn't work so well if you have word-wrap turned on.
I need the ability to toggle show/hide non-printing characters with a key combination. This is a feature that is available in the other editors I've used.
Thank you for your consideration of this request.