 Like the two other scripts , Mkhedruli is purely unicameral . Mkhedruli first appears in the 10th century . The oldest Mkhedruli inscription is found in <unk> <unk> Church dating back to <unk> AD . The second oldest Mkhedruli @-@ written text is found in the 11th @-@ century royal charters of King Bagrat IV of Georgia . Mkhedruli was mostly used then in the Kingdom of Georgia for the royal charters , historical documents , manuscripts and inscriptions . Mkhedruli was used for non @-@ religious purposes only and represented the " civil " , " royal " and " secular " script . 
