Distinguish between Indenture and Cyrographum.

Indenture are those deeds in which there are two or more parties. It was written in duplicate upon one piece of parchment and two parts were severed so as to leave an indented or vary edge, forging being then, rendered very difficult. Indentures were so called as at one time they are indented or cut with uneven edge at the top. The word "Cyrographum" was written between two or more copies of the document and the parchment was cut in a jugged line through this word. The idea was that the difficulty of so cutting another piece of parchment that it would fit exactly into this cutting and writing constituted a safeguard against the fraudulent substitution of a different writing for one of the parts of the original.