You may be surprised to see the real names of parameter and structure members on many of the wiki pages. NEX has automatically generated the code that encodes/decodes method parameters and structures from a data definition language (DDL), and many games contain the parse tree of the DDL declarations in their data segment. It's encoded in big-endian byte order (regardless of the platform) and looks as follows:

Only if declaration type isTemplateInstance:

The second parse tree item is always the same as the first parse tree item. I don't know why it's stored twice.