U+1CCF9 "𜳹" Outlined Digit Nine Unicode Character

U+1CCF9 "𜳹" Outlined Digit Nine is a numerical symbol from the Supplementary Symbols for Legacy Computing block, designed to represent the digit nine in a distinct outlined or hollow form rather than the typical solid glyph. This character was introduced to support the accurate reproduction of historical computer and video game interfaces, where outlined digits were commonly used for visual effects, such as in score displays or specialized typography. It belongs to a set of outlined digits from zero to nine, aiding in the preservation and digital representation of retro computing aesthetics and text mode graphics.