Scope of module symbols (PRIVATE/PUBLIC)

The PRIVATE/PUBLIC modifiers can be used to hide / publish symbols to other modules.

For backward compatibility, functions are by default public. Module variables, types and constants are by default private.

The following example declares a module variable that can be used by other modules, and a private function to be used only locally:

PUBLIC DEFINE custlist DYNAMIC ARRAY OF RECORD
  id INT,
  name VARCHAR(50),
  address VARCHAR(200)
END RECORD
...
PRIVATE FUNCTION myfunction()
...
END FUNCTION