2DA:CLS PRES

Label The name of the row. DOesn't serve any function other than to add readability.

ReqType The type of the requirement. DIVSPELL for divine casting level, ARCSPELL for arcane casting level. SAVE for a base save. FEAT for a feat requirement. There is also one named FEATOR, which requires that at least one of the FEATOR parameters be matched. VAR stands for variable, and means that the variable mentioned has to be positive. There may well be more of these definitions.

ReqParam1 The first parameter. This is given context by the prior column ReqType. For instance, a 1 here means Fortitude save if the ReqType column before it is SAVE. If the column name is FEAT, then this parameter determines which feat has to be acquired.

ReqParam2 Second parameter, not used that often. If the ReqType is SAVE and the first parameter is 1 (meaning fortitude save) then this parameter is the minimum value of the base save. SAVE 1 4 means that the save fortitude has to be at least 4.