From H. W. Smyth, Greek Grammar, I §§149-188
GENERAL PRINCIPLES, ANASTROPHE, CHANGE OF ACCENT IN DECLENSION, INFLECTION AND COMPOSITION, PROCLITICS, ENCLITICS
N. 1. – When they are used as indirect reflexives in Attic prose, the pronouns of the third person οὗ and σφίσι are orthotone, οἷ is generally enclitic, while ἕ is generally orthotone.
N. 2. – After oxytone prepositions and ἕνεκα enclitic pronouns (except τὶς) usually keep their accent (ἐπὶ σοί, not ἐπί σοι; ἕνεκα σοῦ, not ἕνεκά σου; ἕνεκά του, not ἕνεκα τοῦ). ἐμοῦ, ἐμοί, ἐμέ are used after prepositions (except πρός με; and in the drama ἀμφί μοι).
188. Greek has four marks of punctuation. The comma and period have the same forms as in English. For the colon and semicolon Greek has only one sign, a point above the line (·): οἱ δὲ ἡδέως ἐπείθοντο· ἐπίστευον γὰρ αὐτῷ and they gladly obeyed; for they trusted him. The mark of interrogation (;) is the same as our semicolon: πῶς γὰρ οὔ; for why not?
Cf. Greek pronunciation (Elpenor's Lesson 1)
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