For my own future reference — Hawaiian Language:

Hawaiian diacritical marks, ʻokina (ʻ) and kahakō (macron) are not just symbols but essential components of the Hawaiian language. The ʻokina represents a glottal stop, a pause in speech, and is typographically represented as a reversed apostrophe. The kahakō, on the other hand, is a bar above a vowel that indicates a prolonged sound. These marks are crucial for accurate pronunciation and meaning in the Hawaiian language.

// @hawaiiboy