+# eastern arabic digits (0a-9a are persian variants)
+1A ١
+2A ٢
+3A ٣
+4A ٤
+5A ٥
+6A ٦
+7A ٧
+8A ٨
+9A ٩
+0A ٠
+
+# common formatting control
+ZS # ZWSP; capitals like other Cc
+ZN # ZWNJ; less obvious alt: 'Z
+ZW # ZWJ; ZJ somewhy used for tsadi; less obvious alt: "Z
+LR # LRM
+RL # RLM; keep rl for ɼ
+