AGRAuthorization Signature Appropriate to this Document, Receipt Requested APRAuthorization to Service Provider, Receipt Requested ASGAuthorization Signature Appropriate to this Document ASPAuthorization to Service Provider CGRAuthorization Co-signature Appropriate to this Document, Receipt Requested CSGAuthorization Co-signature Appropriate to this Document EARApproval Certification of Environmental Protection Agency, Receipt Requested EPAApproval Certification of Environmental Protection Agency EPRExport Approval Certification, Receipt Requested EXPExport Approval Certification MCRMedical Report Release Certification, Receipt Requested MRRMedical Record Release Certification NRRNon-repudiation of Receipt PPSPaid Preparer's Signature PRPPreparer's Signature PRRPreparer's Signature, Receipt Requested PSRPaid Preparer's Signature, Receipt Requested SFRSignature Forwarded Independent of Referenced Document, Receipt Requested SFSSignature Forwarded Independent of Referenced Document SIRNon-repudiation of Receipt, Receipt Requested TAXAuthorization Signature Appropriate to Submitter of Filing of Taxation Return (TS 813 and others) and under Penalties Prescribed by the Relevant Laws TSOTime Stamp Only (No Responsibility for Contents) ZZRMutually Defined, Receipt Requested ZZZMutually Defined