Arabic diacritics
…shaddah and a dagger alif above lām, followed by hā'. The maddah (⟨مَدَّة⟩ 'extension') is a tilde-shaped diacritic, which can only appear on top of an alif (آ) and indicates a glottal stop followed by a long . In theory, the same sequence could also be represented by two alifs, as in *⟨أَا⟩, where a hamza…