Write an article which describes in detail the API differences between ext/mysql and ext/mysqli. The article should help people understanding a) the compromises the converter tool has to make b) how to rewrite the generated code manually to be optimized for the target application. It's planned to use an article series instead of classical documentation to describe the tool. The advantage of articles is that we can them for marketing purposes. Classical documentation seems not needed as the usage of the tool itself has to be made self-explaining.