Sandbox
From SolarSailWiki
<php> echo '<script src="../Wikka/3rdparty/plugins/jsmath/jsMath.js" type="text/javascript"></script>\n';
echo ' \sum_{i=1}^{\nu} i = {n(n+1)\over 2}
\n';
echo '<script type="text/javascript">jsMath.Process()</script>\n'; </php>