Check the "Files" or "Pages" link for the full list of journal entries.
http://www.amasci.com/amateur/holo1.html
http://www.youtube.com/watch?v=XUy8lELWhJg
http://3dalter.50megs.com/
Unfortunately, the email address in the Contact section gives a "mailbox frozen" error.
http://code.google.com/apis/sketchup/docs/index.html
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