Digit Nine Comma (U+1F10A) is a Unicode other number from the Enclosed Alphanumeric Supplement block. It resides on Plane 1 (SMP, Supplementary Multilingual Plane), has bidirectional class EN (left-to-right (European number)), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as 🄊 or 🄊. Because it is outside the Basic Multilingual Plane, proper font support is required; otherwise a fallback box may be shown.