Saurashtra Vowel Sign Au (U+A8C3) is a Unicode spacing combining mark from the Saurashtra block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class L (left-to-right), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as ꣃ or ꣃ.