Tibetan Mark Ngas Bzung Sgor Rtags (U+0F37) is a Unicode nonspacing mark from the Tibetan block. It resides on Plane 0 (BMP, Basic Multilingual Plane), has bidirectional class NSM (nonspacing mark), is not mirrored, and has combining class 220 (Below). In HTML it can be written as ༷ or ༷.