XML node types and attribute names

By tradition the language uses uppercase keywords, such as LABEL in form files, and the examples in this documentation reflect that convention. The language itself is not case-sensitive. However, XML is case-sensitive, and by convention node types use uppercase/lowercase combinations to indicate word boundaries. Therefore, the nodes and attributes of an abstract user interface tree are handled as follows:

If you reference AUI tree XML nodes or attributes in your code, you must always respect the naming conventions.