Combining Double Macron Below (U+035F) is a Unicode nonspacing mark from the Combining Diacritical Marks block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class NSM (nonspacing mark), is not mirrored, and has combining class 233 (Double Below). In HTML it can be written as ͟ or ͟.