definiens: shall not be applied in its exclusive sense ; ( iv ) shall mean ; ( v ) references to laws, regulations and othergovernmental rules, as well as to contracts, agreements and other instruments, shall mean such rules and instruments as in effect at the time of determination(taking into account any amendments thereto effective at such time withoutregard to whether such amendments were enacted or adopted after the effectivedate of this Agreement ) and shall include all successor rules and instrumentsthereto ; ( vi ) references to or shall mean the lawful currency ofthe United States ; ( vii ) references to or shall be to laws, agencies or other attributes of the United States ( and not to any State orlocality thereof ) ; ( viii ) the meaning of the terms and shall be determined by reference to the United States ; ( ix ) references to shall mean calendar days ; ( x ) references to months or years shall be to theactual calendar months or years at issue ( taking into account the actual numberof days in any such month or year ) ; ( xi ) days, business days and times of dayshall be determined by reference to local time in Amarillo, Texas ; and ( xii ) theEnglish language version of this Agreement shall govern all questions ofinterpretation relating to this Agreement, notwithstanding that this Agreementmay have been translated into, and executed in, other languages