What is hyphenation?
The hyphenation annotation is used to indicate how a word should be cut into syllables. They are therefore an indication of how to pronounce the word.
For example, the hyphenation of "hyphenation" is "hy·phe·na·tion".
All the languages should use the interpunct "·" to indicate the separation of syllables.
If you know of some exception, please discuss it in the discussion page.