ACCESSORY CONTRACT - One made for
assuring the performance of a prior contract, either
by the same parties or by others, such as suretyship,
mortgages, and pledges.
It is a general rule that payment of the debt due
or the performance of a thing required to be performed
by the first or principal contract is a full discharge
of such accessory obligation.
An accessory agreement to guaranty an original contract
which is void has no binding effect.