+Tone marks are diacritics placed above or below letters, indicating the [Pitch](/wiki/pitch) contour of a syllable in certain languages. They are crucial for distinguishing word meanings and grammatical functions, guiding accurate [Pronunciation](/wiki/pronunciation).
+## See also
+- [Diacritic](/wiki/diacritic)
+- [Tone Language](/wiki/tone_language)
+- [Phonetics](/wiki/phonetics)
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