Indic Positional Category - Top And Bottom And Right

Top And Bottom And Right is an Indic positional category that applies to vowel signs or diacritical marks which attach to a base consonant in a specific spatial arrangement, where the mark appears at the top of the glyph, then at the bottom, and also extends to the right side. This value indicates that a single character can occupy multiple positions around the base letter, typically seen in complex scripts where a vowel sign wraps around the consonant, such as certain forms of the Bengali or Telugu vowel signs. It defines the visual placement rules for rendering, ensuring the mark connects correctly without overlapping other elements.