There are 2 different types of modifier boxes possible on the score sheet.

Round Points Modifier: (R Mod or Round Modifier or Points Modifier or Modif.) Is used to modify the round points. Often used to give extra points or take away points.

Total Score Modifier: (Score Modifier or Total Mod. or Total Modifier) Is used to modify the total points. For ex: Often used to give sportsmanship points or to take away points for unsportsmanlike.