Just meaningless notes.

http://www.stepwise.com/Articles/Workbench/eart.1.3.1.html
http://www.stepwise.com/Articles/Workbench/eart.1.3.3.html
http://www.macosxhints.com/index.php?topic=server&page=7
http://manuals.info.apple.com/en/Command_Line_v10.4.pdf