Purpose of a Landlord Waiver?

[Mark Kille]

Last week I made an offer on a commericial office building with one tenant, a dentist, which was accepted.  We are in escrow.  The lease agreement with the seller/dentist has a Landlord Waiver attached to it.  I am not familar with such a Waiver.  It appears it will continue to be in effect once I become the new Landlord.

What is the real purpose of a Landlord Waiver?  Is it to benefit the lender more than the owner/landlord?  TIA