The wa?la (Arabic: ?, lit. 'an instance of connection') or hamzatu l-wa?li ( , 'hamza of connection') is an Arabic diacritic resembling part of the letter d (?) that is sometimes placed over the letter ?alif at the beginning of the word (?). The ?alif with wa?la over it is called the ?alifu l-wa?li ( , 'aleph of connection'). It indicates that the alif is not pronounced as a glottal stop (written with the letter or diacritic hamza ?), but that the word is connected to the previous word (like liaison in French). Outside of vocalised texts, the wa?la is usually not written.