Eric (MS) has been working hard in providing us (loving your work Eric!) with updated BizTalk documentation.
The folks are doing a great job over all of this. This is a massive PDF - a single one which encompasses a great deal of things within it.

Here's the email I got earlier.

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Hello,
We have provided a new, updated Monster PDF of the BizTalk Server 2006 documentation set.  It is also available off of a link on the BizTalk Server 2006 Developer Center at http://msdn.microsoft.com/biztalk.  Highlights include:

·         The PDF is in a self-extracting zip file that is approximately 57megs.
·         The PDF tips the scales at  117 megabytes and includes almost 20,000 pages.
·         Links are rendered in blue with underlines but do not work. This may be addressed in a future enhancement.
·         Searching may be slow due to the size of the document.
·         Feedback, banners, and other content items have been removed to improve the PDF experience.

If you have any comments including ideas for PDF subset collections or for other content, please send them along.  
Thanks,
Eric