I. Introduction This document is an update of the Public Broadcasting Service ("PBS") program policies adopted in 1971/72 and updated in 1987. While the principles embodied in those policies are enduring and remain as valid today as when they were first adopted, changes in technology, in public television, in journalism, and experience with the current guidelines necessitate, as the original program policies themselves anticipated, "periodic review of procedures to establish and implement program standards and practices, and a revision of the statement as required...." I. IntroductionII. Guiding PrinciplesIII. Roles and ResponsibilitiesIV. Editorial Standards  Click here to view PBS's Editorial Standards and Policies in their entirety on the PBS website.