This particular document or draft is an agreement between landlord and tenant for tenancy rights, it suggests that the landlord and tenant are free to end the tenancy if they both want to, as for the tenant has been ready to hand over quiet, vacant and peaceful possession of the flat to landlord. After this the tenant shall have no right, title or interest/claim on this. Also, this represents the assurance that the landlord has not created any third-party rights in respect of the said flat. It protects and ensures the rights for both tenant and landlord.