definiens: or cash shall mean U.S. dollars ; ( v ) the word and words of similar import when used in thisAgreement shall mean unless otherwise specified ; ( vi ) the word shall not beexclusive ; ( vii ) references to or include in electronic form ; ( viii ) provisions shall apply, whenappropriate, to successive events and transactions ; ( ix ) Sellers and Purchasers have each participated in thenegotiation and drafting of this Agreement and if an ambiguity or question of interpretation should arise, thisAgreement shall be construed as if drafted jointly by the Parties hereto and no presumption or burden of proof shallarise favoring or burdening any Party by virtue of the authorship of any of the provisions in this Agreement ; ( x ) areference to any Person includes such Person ’s successors and permitted assigns ; ( xi ) any reference to shallmean calendar days unless Business Days are expressly specified ; and ( xii ) when calculating the period of timebefore which, within which or following which any act is to be done or step taken pursuant to this Agreement, the datethat is the reference date in calculating such period shall be excluded and if the last day of such period is not aBusiness Day, the period shall end at the close of business on the next succeeding Business Day