📄️ $catalog
The catalog describes all the dataclasses, attributes, and interprocess (shared) singletons available in the project.
📄️ $info
Returns information about the entity sets currently stored in 4D Server's cache as well as user sessions
📄️ $singleton
You can directly call exposed functions of your shared singletons through REST.
📄️ $upload
Returns an ID of the file uploaded to the server