Note: A group of us are working on a new report, which will become available as a book soon.  You can check our progress at our project blog. The study here is still available as is. Some of it is clearly out-of-date, some of it is still relevant. The new one is different enough that both will remain available in parallel. Thank you for visiting.

Welcome to the homepage of this 2001 report! It is a quite outdated but you are invited to download it below. It is FREE. Ignore whatever it says in the preface about it being shareware. It is too old for this now.

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