Pierluigi Collina explains key laws

Along with new directives encouraging players and coaches' conduct towards match officials, UEFA has worked with leading officials to outline changes to Law 11 of the Game regarding offside and clarified handball situations.

"We certainly recommended the referees to be very careful in dealing with dissent, with mobbing of the referees and overreaction coming from the benches," said UEFA's chief refereeing officer Pierluigi Collina. "IFAB released a clarification about Law 11 and of course we clarified that with our referees, using several examples of how offside has changed."

You can hear more from Collina and see his explanations of offside and handball situations by clicking on the videos.