This document discusses penalty enforcement rules and mechanics. It outlines basic enforcement spots for different types of plays and fouls. It provides guidance on signaling penalties to the referee, communicating with other officials, and properly administering penalties. It also covers the new 10-second runoff rule implemented in 2011 to stop the clock in the final minute of halves when certain fouls occur. Officials must work together to correctly enforce penalties and communicate the application of the runoff rule when necessary.