S. 159 of the Evidence Act is couched in a language recognising the necessity. The section reads thus:
"159. Refreshing memory.- A witness may, while under examination, refresh his memory by referring to any writing made by himself at the time of the transactions concerning which he is questioned, or so soon afterwards that the Court considers it likely that the transaction was at that time fresh in his memory.
The witness may also refer to any such writing made by any other person, and read by the witness within the time aforesaid, if when he read it he knew it to be correct."
In Mahazers the witnesses are attesting as witnesses. Writing includes the signature also. The witness is also a perty to the mahazer. he can peruse the mahazer at the time when in the witness box. The IO can permuse the case file while in examination. The prosecutor is permitted to refresh the memory of witness and permitted to brief them out side the court.