As I said in yesterday's
My 2013 Top Ten article, I think that metadata-bound libraries (introduced in V9.3 maintenance 2) are one of the most significant SAS enhancements for some time. It seems SAS's Chris Hemedinger agrees. Read his
Closing the "LIBNAME loophole" with metadata-bound libraries article on his SAS Dummy blog to get a very rounded view on their benefits and how to use them.