ItemPropertyReducedSavingThrowVsX

From NWN2Wiki

// Returns Item property reduced saving throw vs. an effect or damage type.  You must
// specify the constant to which the penalty applies(IP_CONST_SAVEVS_*) and the
// penalty to be applied.  The penalty must be a POSITIVE integer between 1 and 20
// (ie. 1 = -1).
itemproperty ItemPropertyReducedSavingThrowVsX(int nBaseSaveType, int nPenalty);

Note: It is not clear why the values for IP_CONST_SAVEVS_* are not aligned with SAVING_THROW_* for those values which are common to both. It is also unclear why ItemPropertyReducedSavingThrow() was not sufficient to cover all saving throws when its signature is identical to this function.