What is the standard attribute xml:lang for?
Every XML element can have an attribute called xml:lang. It lets you set the language you are using. You can use this to
help searching and typesetting. Put this attribute on the top-level element in your Chinese XML document. The values you
can use for Chinese include:
xml:lang="zh" for any Chinese text;
xml:lang="zh-TW" for Chinese text from Taiwan (i.e., traditional characters);
xml:lang="zh-HK" for Chinese text from Hong Kong (i.e. pro
