For the Semsorgrid project, IAM, University of Southampton arc2 is a symlink to the Arc2 library <https://github.com/tremby/arc2/> Graphite.php is a symlink to the Graphite library <https://github.com/cgutteridge/Graphite> flot is a symlink to the flot library <http://code.google.com/p/flot/> Files are cached to /tmp/mashupcache