Microsoft Developer Network (MSDN) now contains the Windows Installer 4.5 beta documentation. From the What's New in Windows Installer 4.5 page, you'll find information on our new multi-package transaction APIs: MsiBeginTransaction, MsiEndTransaction, and MsiJoinTransaction. You'll also find context for the Embedded features including MsiEmbeddedUI table, MsiEmbeddedChainer table and the EmbeddedUIHandler prototype.
Many thanks to Mark, Jen, Matt, Lee, and Julie for getting these pages out to you.
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