ref: fbbd9bf6082043d368b1892b630f5b20a1e28fe5
parent: 242da53aa03f48939a081900a6305ff8351078a9
author: Jean-Marc Valin <jmvalin@jmvalin.ca>
date: Mon Sep 5 17:13:53 EDT 2011
Renumbering the ctl() calls to make programming errors more obvious