They aren't the same, but the construct is very similar...as with other languages.<br>
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LotusScript does use classes, objects (sort of) and properties. There are built in things, and things you "create" as you code.<br>
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Where there are a variety of environments one might use VB, LotusScript can only be used with Domino/Notes products - and recently, with Lotus SmartSuite products to some extent.<br>
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P.S. The book you have IS a little old. If you want to get into this some, check out the free downloads/browsable help files on the Notes.net site.