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Development guidelines
Policies	Development policy Services policy Support policy for PHP Gerrit/Privilege policy Stable interface policy MediaWiki database policy
General guidelines	Security for developers Performance guidelines Commit message guidelines Pre-commit checklist Security checklist for developers Localisation
Code conventions	All languages PHP PHPUnit JavaScript CSS Selenium Python Ruby Java SVG Database schemas
API client code	Standards for API client libraries
Drafts	Design style guide Documentation/Style guide Accessibility guide for developers Best practices for extensions