Markup only solves the shallow part of the problem anyway. Sure it can help communicate with graphic designers, but it doesn't do everything. Lots of OSX apps

Markup only solves the shallow part of the problem anyway. Sure it can help communicate with graphic designers, but it doesn't do everything. Lots of OSX apps (the ones which most people think of as being friendly, usable and pretty) are done mostly programmatically, even with the interface builder stuff available...