Interesting that the article doesn't mention Greek lowercase sigma which has similar rules: > uppercase Σ, lowercase σ, lowercase in word-final position ς htt

Interesting that the article doesn't mention Greek lowercase sigma which has similar rules: > uppercase Σ, lowercase σ, lowercase in word-final position ς https://en.m.wikipedia.org/wiki/Sigma https://en.m.wikipedia.org/wiki/Sigma