The term 'HE KEEPS A CLEAN PLATE' can be summarized as a job description for an Umpire (UMP). An umpire is an official in a variety of sports who is responsible for enforcing the rules and maintaining order. They are also responsible for making decisions on the field or court, such as calling fouls or awarding points. Umpires must have a good understanding of the sport they are officiating and must be able to remain impartial and unbiased. The phrase 'HE KEEPS A CLEAN PLATE' implies that an umpire should always make fair and accurate calls, and not be influenced by any outside factors.