An Introduction to Carnap's Aufbau

As promised earlier, here is a draft of a survey article on Carnap's Logical Structure of the World or Aufbau. The article will eventually be submitted to Philosophy Compass. Comments welcome, although please bear in mind that it is hard to summarize 80 years of discussion in 6000 words! Update (May 2012): A comment has drawn my attention to the broken link -- the published version is now online here.