Atlassian User Interface 9.12
AUI is a tailor-made frontend library for creating a user interface according to the Atlassian Design Guidelines.
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Component documentation
AUI provides JavaScript, CSS and Soy templates (or markup patterns) for a range of ready-made UI components.
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Upgrade guide
Upgrading from a previous version of AUI? Check what's changed and what to pay attention to when bumping the version you're using.
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Design patterns
AUI provides guidelines and usability patterns for use with custom components.