Bhaiksuki Vowel Sign Au (U+11C3B) is a Unicode nonspacing mark from the Bhaiksuki block. It resides on Plane 1 (SMP, Supplementary Multilingual Plane), has bidirectional class NSM (nonspacing mark), is not mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as 𑰻 or 𑰻. Because it is outside the Basic Multilingual Plane, proper font support is required; otherwise a fallback box may be shown.