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Internationalization

Unicode support

Here are some notes and guidelines about Unicode support in Aida:

1. Use Unicode only internally in Smalltalk
2. convert external sources to and from Unicode when interfaces to external world
3. Aida/Web uses UTF-8 encoding to interface your internal Smalltalk domain model in Unicode to a web

There are quite some relics from the past regarding codepage support in class side of AIDASite but this will soon be obsoleted and Aida will strictly use only UTF-8 encoding.