[NTG-context] Line Break in URLs

Hi all, In the 15th edition Chicago Manual of Style, all URLs are broken before punctuation, e.g., http://www.tug .org I'm wondering how I could achieve this with \useURL. Thanks! Helin -- Helin (Colin) Gai Class of 2009, Duke University Box 96332 Durham, NC 27708 Phone: 919-943-6302 helin.gai at gmail.com hg9 at duke.edu