 For example, "yi" is preferred over "yi-Hebr" in most contexts, because the Hebrew script subtag is assumed for the Yiddish language.As another example, "zh-Hans-SG" may be considered equivalent to "zh-Hans", because the region code is probably not significant; the written form of Chinese used in Singapore uses the same simplified Chinese characters as in other countries where Chinese is written.However, the script subtag is maintained because it is significant.