hadley/adv-r — pull request #19 by juancentro (2013-08-25 14:00:05+00:00)
Title: Fix some links

Fix some links which destination is currently known. There are some links remaining in the original [[xxx]] style, but I don't know where to point them (specially the software system one, I suspect that the S3 one could go to the OO chapter, which seems to have been merged with the OO systems one)