Curiosity, albeit marginal, about the Greek, although it could be repeated for other alternative glyphs not necessarily Greek.
In the GaramondPremierePro some variants - such as the letter kappa (uni03BA) and the kappa symbol (uni03F0) reproduced as kappa.alt (always uni03BA) - are present both as Stylistic Alternate ('salt' lookup 26) and in a Style Set (ss02 lookup 31).
What is the use of having this double location? Thank you
What is the use of having this double location? Thank you