ASCII Character ץ

Tsade (also spelled ṣade, ṣādē, ṣaddi, ṣad, tzadi, sadhe, tzaddik) is the eighteenth letter of the Semitic abjads, including the Hebrew alphabet. The origin of ṣade is unclear. It may have come from a Proto-Sinaitic script based on a pictogram of a plant, perhaps a papyrus plant, or a fish hook. Ṣadi, like kaph, mem, pe, and nun, has a final form, used at the end of words. Its shape changes from צ‎ to ץ‎. In gematria, ṣadi represents the number 90. Its final form represents 900, but this is rarely used, taw, taw, and qof (400+400+100) being used instead.