For more information concerning devlabel, refer to these resources.
man devlabel — The man page for devlabel discusses all of the options and includes a brief description of how it works.
man updfstab — The man page for the updfstab program, which is called by hotplug when a USB device is inserted.
man hotplug — the man page for hotplug.
http://www.dell.com/us/en/esg/topics/power_ps1q03-lerhaupt.htm — In Resolving Device Renaming Issues in Linux, the developer who wrote the devlabel program explains how it works.
http://www.lerhaupt.com/devlabel/devlabel.html — The developer's project page.