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Note that the places of the acute are three: the final, the penult, and the antepenult; the place of the grave is the final; of the circumflex, the final and the penult.
Furthermore, note that a word having the acute or the grave on the final is called oxytone sharp-toned. That having the acute on the penult is called paroxytone near-sharp-toned and barytone deep-toned; that on the antepenult is called proparoxytone before-near-sharp-toned and barytone.
Furthermore, that having the circumflex on the final is perispomenon circumflexed; on the penult, barytone and perispomenon.
Note that if the final is long, a word cannot be proparoxytone.
Before two syllables, or if it is someone's referring to a specific case of word formation, a circumflex is not placed, but an acute is always placed. Above a naturally long vowel, a circumflex is not placed, but an acute is always placed. A long vowel before a long vowel is not circumflexed, but always has an acute.
Every naturally long vowel before a short final vowel, being in one part of speech and having the tone on itself, is circumflexed.
| How many durations? Two: the long and the short.
| How many breathings? Two: the rough and the smooth. What is the place of the breathings? All initial vowels of words only, and of the consonants only the ρ, when found at the beginnings of words. | How many affections?
| Three: the apostrophe, the hyphen, and the sub-distinction original: "ὑποδιαστολή"; modern comma usage for clarity.