These are shared core components between data economy standards. By default the core components are very limited and compact to keep the overall standards easy to adopt. The usecases can be extended by expanding the core components with standardized versioned extensions.
-Extension pattern is universal and same in all core components. The core components can be extended with two distinctive patterns. Internal (locally used) woould use "x-local" element and inside it is your local extension content.
+Extension pattern is universal and same in all core components. The core components can be extended with two distinctive patterns. Internal (locally used) woould use "x-localized" element and inside it is your local extension content.
Example of local extension usage:
-x-local:
+x-localized:
Standardized extensions would be implemented with "x-standardized" element. More examples of those you can find from the core components below.