I recorded a 5 minute screencast that shows how to use the new script combining feature in ASP.NET Ajax 3.5 SP1: http://asp.net/learn/3.5-SP1/video-296.aspx
ASP.NET Ajax 3.5 SP1 contains a new feature that enables the application developer to combine scripts
Very cool. Is this the feature described in Omars book?
I don't know. I haven't read this one.