Combining Glagolitic Letter I (U+1E00B) is a Unicode nonspacing mark from the Glagolitic Supplement block. It resides on Plane 1 (SMP, Supplementary Multilingual Plane), has bidirectional class NSM (nonspacing mark), is not mirrored, and has combining class 230 (Above). 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.