Code of Criminal Procedure, 1973–Sec. 91–Negotiable Instruments Act, 1881–Sec. 138–Prayer for calling the original agreement from the record of other Court–Rejection of–Certified copy of agreement is already available on the record and entries made therein are clearly visible–Merely because the original ink used for making entries in the agreement is not visible, the document cannot be summoned–Powers u/s. 91 are discretionary in nature–Interference declined.