Greek ligatures
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A handwritten ligature of the sequence -έστ- from the Byzantine period
Before the days of printing, scribes made use of a number of ligatures to save space, in Greek as in other languages. The ligature for ου — resembling a V above an O — is still sometimes seen. For a modern use of this in the Latin alphabet, see Ou (letter)
In printed 17th-century English works, there sometimes occurs a ligature of Οσ (a small sigma inside a capital omicron) for a terminal "os".
