Master Promissory Note for USD

Hey guys,

I got accepted to the University of San Diego already and am finishing up my requested documents for financial aid that are due in a few days. They asked for me to submit a Master Promissory Note, but does this only apply to one school…I am strongly considering attending USD but it’s still a toss up with an another school when it comes down to cost. This doesn’t in any way bind me to USD right?