Indic Syllabic Category - Invisible Stacker

Invisible Stacker is a special character used in Indic scripts, typically a virama or halant, that removes the inherent vowel from a consonant without producing a visible mark. Its core value lies in enabling the formation of consonant clusters and stacked conjuncts, where multiple consonants appear vertically stacked without intervening vowel sounds. Crucially, the stacker itself renders as zero-width, meaning it occupies no visible space, yet it still actively participates in shaping the glyphs around it. This allows complex syllable structures to be represented accurately in digital text, preserving the orthographic conventions of languages like Devanagari, Bengali, and Tamil. Without this invisible control, such clusters would either break incorrectly or display unwarranted vowel marks, disrupting proper reading and rendering.