Canonical Combining Class - Attached Above

Attached Above is a numeric value of 9, assigned to characters that combine with a preceding base character by attaching a mark directly above it, such as certain vowel signs in Devanagari or Tibetan scripts. This class indicates that the combining mark sits vertically on top of the base glyph, without any horizontal offset, and it participates in reordering during text processing so that the mark is applied after the base and before any marks with higher class numbers. In practice, it ensures correct stacking order when multiple combining characters occur, preventing visual overlap and preserving the intended reading sequence.