After using the contribution "Master Products" for quite a while, I found "Master Products" to be overly complicated and very difficult to use or merge alongside other contributions.
Using this new contribution: "Linked Products",
you'll get a lot of the same functionality as the "Master Products" contribution.

The Linked Products Contribution page can be found here: http://addons.oscommerce.com/info/6842

Attached first release, with less screenshots and manuals.

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