Where a person signs in a language other than the language of the Memorandum, it has to be ensured that he is conversant with the contents of the document. Hence, the contents have to be fully and properly communicated to such person, in his language, to enable him to understand it in the same sense as it is meant in the Memorandum. The signatures are required to be authenticated by a witness. The person witnessing the signature of the subscriber shall make an endorsement to this effect on the document at the appropriate place.