About MODIFIER LETTER LOW INVERTED EXCLAMATION MARK
Modifier Letter Low Inverted Exclamation Mark (U+A71F) is a Unicode modifier letter from the Modifier Tone Letters block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class ON (other neutrals), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as ꜟ or ꜟ.