Very good questions. They do mention: > In order words: you can't edit the description of one inline struct without breaking compatibility. and > Tables: Tab

Very good questions. They do mention: > In order words: you can't edit the description of one inline struct without breaking compatibility. and > Tables: Tables can be used when backward compatibility matters. For example, tables can have new fields append at the bottom without breaking compatibility. Otherwise, I agree it's rather unclear exactly what you can do with tables.