This issue of The Yale Law Journal (the 5th issue of Volume 121, academic year 2011-2012) features articles and essays by several notable scholars. Principal contributors include Ruth Mason and Michael Knoll (an article on tax discrimination), and Michael Graetz and Alvin Warren, Jr. (a featured essay also analyzing tax discrimination). Student contributions discuss such issues as the 26th Amendment's enforcement power, the Attestation Clause in history, and software licensing agreements.The editors of The Yale Law Journal are a group of Yale Law School students, who also contribute Notes and Comments to the Journal's content. The principal articles are written by internationally recognized legal scholars.