>>6285833for us it's basically you get 14 "meals" a week + 300 "plus dollars" for the semester
you can either use a meal to get into the cafeteria and eat as much as you want, or as $6.25 anywhere else on campus. you can also spend the plus dollars as regular money anywhere on campus.
the trick is that they say "oh you get like 300 plus dollars for about $100! 3x the value!" and then double the price of everything on campus so a burger costs $5