Best Practices for writing software to be consumed internationally (i18n)

Question

I am looking for opinions from experts that have written software consumed internationally. I would like to understand the best practices people have employeed at each logic

Answer 1

Unicode (or wchar, or whatever its equivalent in is) everywhere. Don't store labels in the database. Be prepared to allow text and controls to go "the wrong way", i.e. right-to-left.