In such a contract , the purchase or sale of an interest rate instrument , for example a bond , is agreed on the contract date to be delivered at a future date , at a given price .
 LÝrg acoqaßa silÞ : so lÝro rgleßo amÜlera rsgm silÞ fÞsgrgy jai rsgm silÞ pqoruoqÜy emüy vqeocqÜuot , üpxy atsÞ pqojýpsei bÜrei silþm pot dialoquþmomsai apü amacmxqirlÝmoty barijoýy uoqeßy sgy acoqÜy Þ rso pkaßrio sgy keisotqcßay amacmxqirlÝmxm vqglasirsgqßxm aniþm , epß rtmakkacþm pqaclasopoioýlemxm re jamomijÝy rtmhÞjey acoqÜy .