"The basic rules concerning the control of the EU’s external borders are set out in the Schengen borders Code (the ‘Code’), which replaced a number of prior measures, including the ‘Common Manual’ for border guards
“The basic rules concerning the control of the EU’s external borders are set out in the Schengen borders Code (the ‘Code’), which replaced a number of prior measures, including the ‘Common Manual’ for border guards drawn up to implement the Schengen Convention… This analysis examines the current state-of-play of the negotiation of the 2011 proposals, and indicates their possible impact.”
See: Full analysis (pdf)