How to Hide a Vowel in Southeast Asia: antivowels, why many scripts have them, why some ditched them

The history of a mark that deletes sounds throughout Southeast Asia's alphasyllabic writing systems. Who has it? Who lost it? What's its origin? Read my sources: https://docs.google.com/document/d/1-... Subscribe to me: https://www.youtube.com/subscription_... Become a patron:   / nativlang   Tip me one time: https://www.ko-fi.com/NativLang/ ~ Briefly ~ Start with "pamudpod" in the Philippines. From there, follow a millennium-old inscription to Java. Compare related marks throughout Maritime and Mainland Southeast Asia. The local trail ends on one large island in the middle of the map, where stones bear marks that traveled a long way, from South India. ~ Credits ~ Art, animation, narration and music are homemade. Details in the sources document linked above