Purpose of args parameter of getLoaderManager().initLoader(...,...,...)?

Does anyone have a description of the usage of the Bundle args parameter of initLoader()? Is the object merely set on the resulting cursor or is there a way to get access to that object from the data source being queried - like a Content Provider?

from docs:

args Optional arguments to supply to the loader at construction. If a loader already exists (a new one does not need to be created), this parameter will be ignored and the last arguments continue to be used.

Thank you in advance.