The type of re-buy, addon or re-entry.
"Rebuy": A player rebuys chips at various points in a tournament. Typically when their stack is less than the start stack and before the conclusion of the rebuy period.
"Addon": A player adds chips to their stack. This usually occurs at the end of the rebuy period.
"Reentry": This is similiar to a rebuy, however, it is only available when a player is felted.