alter hooks

especially noteworthy is the example of namespacing toward the end of the slideshow. This demonstrates how to segment multiple features.

"we exported some initial features that contained the overlapping dependencies as defined above. Then, we edited the exported features so that they contained just the components we wanted them to have - this process included removing the overlaps, and maintaining dependencies on both modules and other features. This allowed us to create some base features that contain the central keys to delivering the functionality - things like content types, imagecache settings, fields, etc. Then, we created some extras features that contain - for example - various views, flags, and other mechanisms used to organize information on the site. Finally, we created UI features that contain the contexts and the reactions that display specific blocks on specific pages."