mathURL
http://mathurl.com/593zal
<img src="http://mathurl.com/593zal.png" />
![\dvips % we want postscript features
\usepackage{qtree} % load qtree
\textmode % we're doing text instead of math
\Tree [.S This [.VP [.V is ] \qroof{a simple tree}.NP ] ]](http://mathurl.com/593zal.png)