Assertion: classical latin's vowel | /r/CapableOf | mark an /h/ sound
Facets:
value: at the beginning of a word
type: LOCATION
Source sentences:
text: In addition to the accent marks, every word-initial vowel must carry either of two so-called "breathing marks": the rough breathing (ἁ), marking an /h/ sound at the beginning of a word, or the smooth breathing (ἀ), marking its absence.