Some linguists restrict the double-dot subscript ⟨◌̤⟩ to murmured sonorants, such as vowels and nasals, which are murmured throughout their duration, and use the superscript hook-aitch ⟨◌ʱ⟩ for the <answer>breathy-voiced release of obstruents.</answer>
What uses the ⟨◌ʱ⟩?
breathy-voiced release of obstruents.